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Rotational Motion in Physics 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. Which of the following is NOT a rotational variable?

Question 2 2. Which of the following is a correct definition of moment of inertia?

Question 3 3. Which of the following defines inertia?

Question 4 4. Which of the following is a correct definition of rotational motion?

Question 5 5. If a force of 10 newtons is applied at a distance of 5 meters from a pivot point, what torque does this produce?

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Question 6 6. What is the definition of angular velocity?

Question 7 7. Which of the following quantities does not affect an object's angular momentum?

Question 8 8. When an object is in rotational equilibrium the sum of which external property acting on the object must equal zero?

Question 9 9. How do we know that rotating objects have kinetic energy?

Question 10 10. If the angular velocity of a spinning disk is 6 radians per second, and four seconds later it is 20 radians per second, what is the angular acceleration of the disk during that time?

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Question 11 11. What are the units of moment of inertia?

Question 12 12. A merry-go-round is pushed with a torque of 500 newton-meters, around an angle of 2-pi radians. How much work is done in this process?

Question 13 13. An spinning top with uniform mass distribution is rotating around its axis at a rate of three rotations every six seconds. If the moment of inertia of the object is 2 kg m^2, how much rotational kinetic energy does the spinning top contain?

Question 14 14. What is the theoretical value for the moment of inertia of a 2 kilogram solid sphere of radius 0.03 meters?

Question 15 15. A planet is orbiting a star in a perfect circle. It has a velocity of 4x10^4 m/s, a mass of 3 x 10^24 kg. If at a particular moment it's orbiting at a radius of 2 x 10^11 meters, how much angular momentum does it have?

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Question 16 16. 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 17 17. Which of the following is NOT a rotational kinematics quantity?

Question 18 18. What happens when an ice-skater moves in her arms?

Question 19 19. Which of the following is an example of an object experiencing rotational motion?

Question 20 20. Which of the following is an example of an object experiencing translational motion?

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Question 21 21. What is the definition of conservation of momentum?

Question 22 22. Assuming the total mechanical energy is conserved, which of the following is an accurate description of the energy transfer of a ball that starts at rest at the top of a ramp and then rolls down to the bottom at ground level? (The following abbreviations are used: GPE = gravitational potential energy, TKE = translational kinetic energy, RKE = rotational kinetic energy.)

Question 23 23. If it wasn't for friction or air resistance, what would happen to a spinning top?

Question 24 24. Which of the following is a correct definition of torque?

Question 25 25. If you hold a stack of heavy books for 10 minutes, are you doing work, and why?

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Question 26 26. 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 27 27. Which of the following is a correct definition of moment of inertia?

Question 28 28. A spinning top is spun at 720 degrees in five seconds, by applying a torque of 10 newton-meters. How much power is being transferred to the spinning top? Note: 180 degrees is equal to pi (3.14) radians.

Question 29 29. What is the angular equivalent of 'position'?

Question 30 30.

Use the following data from a repeat of the ball experiment, to figure out the moment of inertia of a second ball:

Mass of the ball: 1 kg.

Radius of the ball: 0.02 meters.

Height of the hill: 0.3 meters.

Translational velocity at bottom: 2.2 m/s

Rotational velocity at bottom: 80 rads/s

Rotational Motion in Physics Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next question. You can skip questions if you would like and come back to them later with the "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. You will lose your work if you close or refresh this page. Good luck!

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