The Mock Test is solved at the bottom of this page. Google sites doesn't support Bookmarks apparently, (?!?) so just scroll down. (I didn't feel like editing the HTML code....)
Cross off one: (6:63 - Chapter 6, problem #63) Energy - Energy worksheet, Orbit and Gravity - Orbit and gravity worksheet
Page 1 – Person pushing a box up an incline
Potential energy (simple)
Kinetic energy (just like mock test)
Work (simple)
Force of friction (IQ on the line...)
Force to move up the plane at a constant velocity (just like mock test)
Energy: 7, 9, 10
6:31, 63, 75
Page 2– Energy Potpourri
Kinetic and potential energy (6:1, 17)
Work, time and power (6:63, 58)
Conservation of energy (1 to 1) (Energy:1, 4)
Conservation of energy (1 to 2) (Energy:3, 5, 7)
Conservation of energy (2 to 2) (Energy:8, 9)
Page 3– Vertical circle, Centrifugal force
Centripetal acceleration (pretty basic)
Force exerted at the top and bottom of the circle (Orbit and Gravity:-1, 0)
If the force is thus and such, what is the velocity. (Orbit and Gravity:-1, 0), (5:7, 8, 12, 13)
What is the centripetal acceleration with period (new question - not a vertical circle)
Centripetal force (5:2, 4)
Page 4– Orbit and Gravity
Force of gravity between the moon and the planet (Orbit and Gravity:1, 2a)
Orbital speed/Period of orbit. (Orbit and Gravity:6, 7)
Orbit question. (Orbit and Gravity:11)
Force of gravity question. (Orbit and Gravity:3, 4))
Orbit lab question - how do you get from orbit to orbit? (Like the Orbit Lab - specifically New Orbit - how to change orbits)
Mock Test:
Download the document: Misc-MockTest.doc
The videos after the questions are me solving them on YouTube. :-P
IB Physics Mock Test on Chapters 5 and 6
1. An elevator motor speeds up a 543 kg elevator from 5.0 m/s to 9.0 m/s , accelerating the elevator upwards over a distance of 7.5 m. There is a constant friction force of 850 N opposing the elevator.
A. What is the elevator’s change in kinetic and potential energy? (+15,204 J KE, +39,951 J PE) – with no SF
B. What force must the motor exert on the elevator? (8,204 N)
C. What force must the motor exert to make the elevator move at a constant speed? (6,177 N)
2. – A collection of random energy questions:
A. A motor does 3120 J of work in 1.2 minutes, what is its power? What work would it do in 5.0 minutes? (43 W, 13,000 J)
B. You throw a 0.145 ball straight up exerting a force of 37.0 N vertically for 1.20 m. At what elevation (above the lowest point) is the ball going 14.5 m/s? (20.5 m)
C. Fred throws a 0.357 kg ball straight downward at 12.0 m/s from the top of a 22.0 m tall cliff. What was the average force of air friction if the ball strikes the ground with a velocity of only 17.0 m/s (2.33 N)
3. Red Elk twirls a 2.10 kg stone at a constant velocity on the end of a 35.0 cm long string with a period of 0.850 seconds.
A. What is the tension in the string at the top and at the bottom? (19.6 N down, +60.8 N up)
B. What would be the velocity of the stone if there were a tension of 78.0 N at the bottom? (3.09 m/s)
C. A centrifuge spins with a period of 0.0150 seconds, and a radius of 23.0 cm. What is the centripetal acceleration in “g”s at the edge of the centrifuge, and what is the tangential velocity at this point? (4110 “g”s, 96.3 m/s)
4. A planet with mass 6.21x1024 Kg has a moon of mass 1.17x1021 Kg that orbits with a speed of 1021 m/s.
A. What is the distance between the moon and the planet? (3.97x108 m)
B. What would be the period of the moon’s orbit if the moon were 1.78x108 m from the planet? (7.33x105 s)
C. If a 12.5 kg object on the surface of that planet weighed 104 N, what is its radius? (7.06x106m)