TExES Physics/Math 7-12: Rotational Motion & Conservation of Energy 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. 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 2 2. Which of the following is NOT a rotational quantity used in physics?

Question 3 3. A mass of 3 kilograms, and a mass of 6 kilograms are placed at different points on a seesaw until they balance perfectly. If the 3 kilogram mass is 0.5 meters from the pivot point, how far away is the 6 kilogram mass?

Question 4 4. Why are light bulbs measured in watts (power) instead of joules (work)?

Question 5 5. 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?

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Question 6 6. If you hold a stack of heavy books for 10 minutes, are you doing work, and why?

Question 7 7. Which of the following is the rotational version of Newton's 1st Law?

Question 8 8. Which of the following is NOT an example of torque in the real-world?

Question 9 9. Why is it easier to open a door by pushing a long way from the hinge?

Question 10 10. What is rotational kinetic energy?

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Question 11 11. 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 12 12. What is the definition of angular velocity?

Question 13 13. How do we know that rotating objects have kinetic energy?

Question 14 14. 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 15 15. 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 16 16. Instead of mass (used in translational motion), what do we use in the equation for rotational kinetic energy instead?

Question 17 17. Which of the following is a correct definition of torque?

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

Question 19 19. Which of the following is a correct definition of rotational motion?

Question 20 20. If it wasn't for friction or air resistance, what would happen to a spinning top?

TExES Physics/Math 7-12: Rotational Motion & Conservation of Energy 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!

TExES Physics/Mathematics 7-12 (243): Practice & Study Guide  /  Math Courses
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