Rotational Motion Lesson Plans Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. If you hold a stack of heavy books for 10 minutes, are you doing work, and why?

Question 2 2. Which of the following quantities does not affect an object's angular momentum?

Question 3 3. A rubber ball (m = 1 kg, r = 0.5 m)) moving at 10 m/s strikes a metal rod (m = 2 kg and length of 1 m) hanging from a pin at its geometric center. After the collision, the rubber ball falls straight to the ground and the rod moves with an initial angular speed of 2 rad/s. At what angle did the rubber ball strike the metal rod? Irod about its center = (1/12)mL2.

Question 4 4. Which of the following is NOT an example of torque in the real-world?

Question 5 5. Which of the following is a full and correct definition of angular momentum?

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Question 6 6.

Which of the following is NOT one of the big 5 equations for rotational motion with a constant acceleration?

(Note: In the images below, w0 is the initial angular velocity, and w is the final angular velocity. This is another way of notating the same thing, which you may well see in problems and tests.)

Question 7 7. What is true about the velocity an object can experience while under translational equilibrium, and the angular velocity an object can experience while under rotational equilibrium?

Question 8 8. Which of the following people has the most linear momentum?

Question 9 9. When an object is in translational equilibrium the sum of which external property acting on the object must equal zero?

Question 10 10. What is the definition of angular velocity?

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Question 11 11. Instead of mass (used in translational motion), what do we use in the equation for rotational kinetic energy instead?

Question 12 12. What is rotational kinetic energy?

Question 13 13. Which of the following is the rotational version of Newton's 2nd Law?

Question 14 14. Which of the following is NOT a rotational variable?

Question 15 15. How do we know that rotating objects have kinetic energy?

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Question 16 16. Why is it easier to open a door by pushing a long way from the hinge?

Question 17 17. Imagine a ball rolling down a hill without friction. To measure the moment of inertia, which of the following is NOT a measurement you would need to take (or figure out)?

Question 18 18. A 10000 kg satellite orbits Earth at 5000 m/s. It is at 1.65 Earth radii, where the radius of the earth is 6371 km. What is the satellite's angular momentum?

Question 19 19. A spinning top increases the rate at which it spins from 5 radians per second, at an angular acceleration of 3 radians per second per second. If it continues to accelerate for 4 seconds, what will the final angular velocity be?

Question 20 20. A planet is orbiting a star in a wildly elliptical orbit. The planet has a mass of 3 x 10^4 kilograms, a velocity of 3 x 10^3 meters per second, a radius of 7 x 10^13 meters, and is orbiting at an angle of 70 degrees to the star. When the planet reaches its closest point of approach, at a radius of 2 x 10^12 meters, and an angle of 90 degrees, approximately how fast will it be moving?

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Question 21 21. A spinning top is spun at an angular velocity of 3 radians per second, by applying a torque of 10 newton-meters. How much power is being transferred to the spinning top?

Question 22 22. Which of the following is an example of an object experiencing rotational motion?

Question 23 23. When an object is in rotational equilibrium the sum of which external property acting on the object must equal zero?

Question 24 24. What is the angular equivalent of 'position'?

Question 25 25. If it wasn't for friction or air resistance, what would happen to a spinning top?

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Question 26 26. A 1 kg solid rubber ball moving at 50 m/s strikes a light wooden plank. 2/3 of the initial kinetic energy of the ball is transferred to the wooden plank making it spin in a vertical circle at 10 Hz. Determine the moment of inertia of the wooden plank.

Question 27 27. Which of the following is NOT a rotational kinematics quantity?

Question 28 28. Which of the following is a correct definition of rotational motion?

Question 29 29. Which of the following is the rotational version of Newton's 1st Law?

Question 30 30. Which of the following defines ROTATIONAL inertia?

Rotational Motion Lesson Plans Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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