6. If a wheel is spinning about its central axis (but not moving forward), does

Question

6. If a wheel is spinning about its central axis (but not moving forward), does it have kinetic energy? Explain. 7. Based on conservation of energy, which do you think would gain more speed: a block of MASS m sliding down a ramp, or a wheel of mats in rolling down the same front the stun height. Both begin their journey with zero initial speed. 8. Suppose you see the following formula in a physics textbook: = What must be the units of I? Based on your answer, what is the most general expression for I in terms of m and r. 9. What is the rotational kinetic energy of the 4 tires on a typical car driving at 60 mph? How does this compare to the car's translational kinetic energy? 10. Suppose you wanted to use conservation of momentum and energy to analyze the game of pool. How would the law of conservation of momentum help? What about conservation of energy? Estimate the importance of rotational considerations?

Explanation / Answer

yes the wheel will have rotational kinetic energy

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