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3101. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L18/Lecture18.pdf
Contact Forces from Fluids Pressure and Buoyancy Clicker Channel D Monday , 4 April 2011 Student Experience of Learning and Teaching (SELT) Ї Learning and Teaching evaluations for this course are being run online Ї Links ... the emails from `ANU Student Evaluations' Ї For information and past results go to: http:// unistats.anu.edu.au/surveys/selt/ 1 Monday , 4 April 2011 This week's homework Ї Ї Ї Is due in near the end of the break Sunday 23rd April ... Monday, 4 April 2011 Air column! ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L18/Lecture18.pdf -- 2917.7 Кб -- 04.04.2011
[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L18/Lecture18.pdf -- 2917.7 Кб -- 04.04.2011
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[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L18/Lecture18.pdf -- 2917.7 Кб -- 04.04.2011
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3102. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L16/Lecture16.pdf
Angular Momentum A vector.. Clickers Channel D Wednesday, 30 March 2011 Analogy - between forces and torques. ... Wednesday, 30 March 2011 Angular Momentum Ї Angular momentum: written L Ї Definition L = MV r V r Axis M Use perpendicular distance, just like for torque Wednesday, 30 March 2011 Which ball has the most angular momentum? ... Wednesday, 30 March 2011 Why? ... Wednesday, 30 March 2011 And vector angular momentum Ї Ї Points in the same direction as the angular velocity. ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L16/Lecture16.pdf -- 2389.2 Кб -- 29.03.2011
[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L16/Lecture16.pdf -- 2389.2 Кб -- 29.03.2011
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[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L16/Lecture16.pdf -- 2389.2 Кб -- 29.03.2011
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3103. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L16/gyro2.py
... Bruce Sherwood scene.width=800 scene.height=800 scene.title='Nutating Gyroscope ' Lshaft = 1. # length of gyroscope shaft Rshaft = 0.03 # radius of gyroscope shaft M = 1. # mass of gyroscope (massless shaft) Rrotor = 0.4 # radius of gyroscope rotor Drotor = 0.1 # thickness of gyroscope rotor Dsquare = 1.4*Drotor # thickness of square that turns with rotor I = 0.5*M*Rrotor**2. # moment of inertia of gyroscope hpedestal = ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L16/gyro2.py -- 4.1 Кб -- 29.03.2011
[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L16/gyro2.py -- 4.1 Кб -- 29.03.2011
[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L17/gyro2.py -- 4.1 Кб -- 29.03.2011
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[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L16/gyro2.py -- 4.1 Кб -- 29.03.2011
[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L17/gyro2.py -- 4.1 Кб -- 29.03.2011
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3104. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L16/crossproduct.py
from visual import * # demonstration of vector cross product print Vector cross product: Red cross Green = Yellow Drag to change green vector Click to toggle fixed angle or fixed length # Ruth Chabay scene.title= Vector Cross Product scene.width=600 scene.height=600 R = 0.15*4 plane = curve( ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L16/crossproduct.py -- 4.1 Кб -- 29.03.2011
[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L16/crossproduct.py -- 4.1 Кб -- 29.03.2011
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[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L16/crossproduct.py -- 4.1 Кб -- 29.03.2011
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3105. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L16/iteration_BH_vector.py
from visual import * scene.background = color .white scene.range = 200000000 Delta_t = 0.2 Mbh = 1.0E31 G = 6.67E-11 t = 0 spaceship = sphere( pos = vector (120000000,0,0), radius = 5000000, color = color .blue) spaceship.vel = vector (0, 1500000, 0) black_hole = sphere( pos = vector (0,0,0), radius = 10000000, color = color .black) while mag ( spaceship.pos ) black_hole ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L16/iteration_BH_vector.py -- 1.7 Кб -- 29.03.2011
[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L16/iteration_BH_vector.py -- 1.7 Кб -- 29.03.2011
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[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L16/iteration_BH_vector.py -- 1.7 Кб -- 29.03.2011
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3106. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L15/Lecture15.pdf
Rotation and Angles By torque and energy Sunday, 27 March 2011 CPR Ї Ї An experiment - and things always go wrong when you try experiments the first time. ... L2 But both subtend the same angle at the axis L1 L1 = r1 r2 Axis Sunday, 27 March 2011 r1 L2 = r2 Relationship between linear and angular speed for wheels... 1. r v 2. 3. 4. 5. 6. 7. v=2r v = 180 r v=r v=r v=2/r v = 180 /r None of the above Ї If the wheel is rotating at angular speed , how fast (v) is a point on the circumference going? ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L15/Lecture15.pdf -- 1034.5 Кб -- 27.03.2011
[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L15/Lecture15.pdf -- 1034.5 Кб -- 27.03.2011
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[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L15/Lecture15.pdf -- 1034.5 Кб -- 27.03.2011
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3107. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L14/Lecture14.pdf
Thermal Energy Heat and Temperature Clickers Channel D Friday, 25 March 2011 NO MID-TERM Ї in this course. ... Friday, 25 March 2011 Friday, 25 March 2011 Friday, 25 March 2011 Heat is a form of energy Ї Ї Ї Friday, 25 March 2011 In a solid it's actually a combination (roughly 50/50) of kinetic energy in vibrating atoms and potential energy in the chemical bonds (which behave like springs) which hold them together. ... Friday, 25 March 2011 Which has more heat? ... Friday, 25 March 2011 Hot in space? ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L14/Lecture14.pdf -- 2274.8 Кб -- 24.03.2011
[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L14/Lecture14.pdf -- 2274.8 Кб -- 24.03.2011
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[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L14/Lecture14.pdf -- 2274.8 Кб -- 24.03.2011
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3108. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L13/Lecture13.pdf
Energy, Work and Systems Complications of Energy Clickers Channel D Wednesday, 23 March 2011 CPR News Ї Ї Ї Ї If you are marking something posted to Google Docs and the diagrams are not showing up.. ... Wednesday, 23 March 2011 3 Wednesday, 23 March 2011 Back to Energy Ї Ї Ї For weeks now we've been talking about force/momentum. ... Your push! ... Wednesday, 23 March 2011 Zero Ї Force and displacement are at right-angles, so no work is done (Cos() = 0) Wednesday, 23 March 2011 Stationary cart? ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L13/Lecture13.pdf -- 872.0 Кб -- 23.03.2011
[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L13/Lecture13.pdf -- 872.0 Кб -- 23.03.2011
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[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L13/Lecture13.pdf -- 872.0 Кб -- 23.03.2011
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3109. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L11/Lecture11.pdf
Collisions and Vectors and Newton's Third Law Clickers Channel 1 Saturday, 19 March 2011 Calibrated Peer Review Ї Ї Please at least try writing something with equations and uploading it well before the deadline. ... Saturday, 19 March 2011 Please.. ... Not enough information provided Saturday, 19 March 2011 They are identical Ї The car changes its speed far more. ... None of these Saturday, 19 March 2011 Working out the Momentum Change Ї Momentum points in the same direction as the velocity vector. ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L11/Lecture11.pdf -- 893.7 Кб -- 19.03.2011
[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L11/Lecture11.pdf -- 893.7 Кб -- 19.03.2011
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[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L11/Lecture11.pdf -- 893.7 Кб -- 19.03.2011
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3110. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L10/Lecture10.pdf
Contact Forces, Friction and Problem Solving Strategies And a guide to this week's homework Sunday, 13 March 2011 New and experimental type of homework Ї Ї Ї Calibrated peer review. ... Sunday, 13 March 2011 For example You are dragging a box of mass M along the floor at a constant speed. ... Speed? ... Sunday, 13 March 2011 Standard Model Ї When you push something gently sideways, the friction force will be equal and opposite to the force trying to slide the object along, and will prevent motion. ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L10/Lecture10.pdf -- 641.1 Кб -- 13.03.2011
[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L10/Lecture10.pdf -- 641.1 Кб -- 13.03.2011
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[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L10/Lecture10.pdf -- 641.1 Кб -- 13.03.2011
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3111. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L09/Lecture09.pdf
... Thursday, 10 March 2011 Vertical spring-mass Ї Time t with t+t Ї Position x with x+vt Ї Velocity v with v + g - k x t m Thursday, 10 March 2011 Let's go Ї Start off with t=0, x=0, v=0 Ї Apply our equations: ґ New value of t is t + t = 0+0.1 = 0.1 ґ New value of x is x + v t = 0+0в0.1 = 0 ґ New value of v is k 5 v + g - x t = 0 + 9.8 - 0 в 0.1 = 0.98 m 0.1 Thursday, 10 March 2011 So after 0.1 seconds.. ... Thursday, 10 March 2011 Key points Ї Ї Whenever objects touch, there is a contact force. ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L09/Lecture09.pdf -- 656.7 Кб -- 10.03.2011
[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L09/Lecture09.pdf -- 656.7 Кб -- 10.03.2011
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[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L09/Lecture09.pdf -- 656.7 Кб -- 10.03.2011
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3112. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L09/threebody.py
from __future__ import division from visual import * R=4e11 s1 = sphere( pos =(0,R,0), radius=1e10, color = color .magenta) s2 = sphere( pos =(0,-R,0), radius=1e10, color = color .cyan) s3 = sphere( pos =(R,0.05*R,0), radius=1e10, color = color .green)# Change to 0.04 s1.m = 1e30 s2.m = 1e30 s3.m = 1e30 G = 6.7e-11 #v = sqrt(G* s1.m /(4*R)) v = 10000 s1.p = s1.m *vector(-0.2*v,-0.3*v,0) s2.p = ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L09/threebody.py -- 2.1 Кб -- 10.03.2011
[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L09/threebody.py -- 2.1 Кб -- 10.03.2011
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[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L09/threebody.py -- 2.1 Кб -- 10.03.2011
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3113. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L09/iteration_BH_vector.py
from visual import * scene.background = color .white scene.range = 200000000 Delta_t = 0.2 Mbh = 1.0E31 G = 6.67E-11 t = 0 spaceship = sphere( pos = vector (100000000,0,0), radius = 5000000, color = color .blue) spaceship.vel = vector (2000000, 0, 0) black_hole = sphere( pos = vector (0,0,0), radius = 10000000, color = color .black) while mag ( spaceship.pos ) black_hole ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L09/iteration_BH_vector.py -- 1.7 Кб -- 09.03.2011
[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L09/iteration_BH_vector.py -- 1.7 Кб -- 09.03.2011
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[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L09/iteration_BH_vector.py -- 1.7 Кб -- 09.03.2011
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3114. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L08/iteration_BH.py
Delta_t = 1.0 Mbh = 1.0E31 G = 6.67E-11 t = 0 v = 2000000 x = 100000000 while x > 0.0: t = t + Delta_t x = x + v*Delta_t v = v - (G*Mbh/(x*x))*Delta_t print t, x
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L08/iteration_BH.py -- 1.2 Кб -- 08.03.2011
[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L09/iteration_BH.py -- 1.2 Кб -- 08.03.2011
[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L08/iteration_BH.py -- 1.2 Кб -- 08.03.2011
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[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L09/iteration_BH.py -- 1.2 Кб -- 08.03.2011
[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L08/iteration_BH.py -- 1.2 Кб -- 08.03.2011
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3115. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L08/iteration_spring.py
Delta_t = 0.1 g = 9.8 k = 10.0 m = 1.0 t = 0 v = 0 x = 0 while t < 10.0: t = t + Delta_t x = x + v*Delta_t v = v + (g-k*x/m)*Delta_t print t, x
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L08/iteration_spring.py -- 1.2 Кб -- 08.03.2011
[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L09/iteration_spring.py -- 1.2 Кб -- 08.03.2011
[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L08/iteration_spring.py -- 1.2 Кб -- 08.03.2011
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[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L09/iteration_spring.py -- 1.2 Кб -- 08.03.2011
[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L08/iteration_spring.py -- 1.2 Кб -- 08.03.2011
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3116. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L08/Lecture08.pdf
... Sketch graphs of: ґ Position vs. time ґ Velocity vs. time ґ Acceleration vs. time Tuesday , 8 March 2011 Tuesday , 8 March 2011 Tuesday , 8 March 2011 Tuesday , 8 March 2011 Each graph is the gradient of the previous one Tuesday , 8 March 2011 Slope is positive here and negative here Tuesday , 8 March ... Acceleration! ... Tuesday, 8 March 2011 Iteration equations Ї For time: t + t (as before) Ї For position: x+ v t (as before) Ї But what about for velocity? ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L08/Lecture08.pdf -- 1087.3 Кб -- 08.03.2011
[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L08/Lecture08.pdf -- 1087.3 Кб -- 08.03.2011
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[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L08/Lecture08.pdf -- 1087.3 Кб -- 08.03.2011
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3117. http://www.mso.anu.edu.au/~bessell/FTP/Filters/Epotek301-2FL.pdf
EPO-TEKў 301-2FL Technical Data Sheet For Reference Only Low Stress, Optical Epoxy Number of Components: Mix Ratio By W eight: Specific Gravity: Part A Part B Pot Life: Shelf Life: Two 100:35 1.06 0.89 10 Hours One year at room temperature. ... Please see Applications Note available on our websi te. ... EPO-TEK 301-2FL Advantages & Application Notes: Suggested for LCD optical lamination and sealing of glass plates. ... Ease of use: potting and casting, encapsulation, and adhesive. ...
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Ссылки http://www.mso.anu.edu.au/~bessell/FTP/Filters/Epotek301-2FL.pdf -- 166.2 Кб -- 07.03.2011
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3118. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L07/Lecture07.pdf
Motion in an Circle and Oscillation Two Special Cases Monday, 7 March 2011 Course news Ї Ї Ї Monday, 7 March 2011 Labs start tomorrow Clickers will now be used for assessment. ... Monday, 7 March 2011 Circular motion Ї Remember - if a force is applied that is always sideways, an object will move in a circle. ... Monday, 7 March 2011 Vertical spring-mass system Ї VPython simulation, spring_vertical.py Monday, 7 March 2011 Oscillation Ї Ї Ї The net force is towards the equilibrium position. ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L07/Lecture07.pdf -- 808.8 Кб -- 07.03.2011
[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L07/Lecture07.pdf -- 808.8 Кб -- 07.03.2011
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[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L07/Lecture07.pdf -- 808.8 Кб -- 07.03.2011
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3119. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L07/spring_vertical.py
... L -Slen/2.0 + amplitude*cos(t*frequency),0) gravforce = G* block.mass ## viscous friction if viscous == 1: ffriction.x = -u*block.vel.x ## end viscous friction ## sliding and air resistance if (block.vel.x 0): if sliding == 1: ffriction.x = u*gravforce ## sliding if air == 1: ffriction.x = u*(block.vel.x**2) ## air resistance else: if sliding == 1: ffriction.x = -u*gravforce ## sliding if air == 1: ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L07/spring_vertical.py -- 4.5 Кб -- 05.03.2011
[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L07/spring_vertical.py -- 4.5 Кб -- 05.03.2011
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[ Сохраненная копия ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L07/spring_vertical.py -- 4.5 Кб -- 05.03.2011
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3120. http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L06/Approximations.pdf
... I see the same problem all the time in undergraduate assignments: someone comes up with an answer that is clearly, wildly, hopelessly wrong (e.g. the mass of some star is 0.7 kg, or an asteroid is travelling at 1010 m s-1 (faster than light), or the Earth took 1011 years to form (much longer than the age of the universe). ... This means that every valid equation should work equally well, regardless of the units you use (as long as they are self consistent). ... Do you think this could be correct? ...
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Ссылки http://www.mso.anu.edu.au/pfrancis/phys1101/Lectures/L06/Approximations.pdf -- 219.3 Кб -- 04.03.2011
[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L06/Approximations.pdf -- 219.3 Кб -- 04.03.2011
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[ Текст ] Ссылки http://www.mso.anu.edu.au/~pfrancis/phys1101/Lectures/L06/Approximations.pdf -- 219.3 Кб -- 04.03.2011
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