NJDevilsFan26
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Listed below are just a things I cannot figure out involving rotational motion (one involves a situation).
-Why does Kinetic Friction do no work if bodies roll without slipping? I thought it would add torque to provide more energy for rotational motion.
Situation: A solid bowling ball rolls without slipping down the return ramp at the side of the alley. The ramp is inclined at an angle beta to the horizontal. What are the ball's acceleration and the magnitude of the friction force on the ball? Treat the ball as a uniform solid sphere, ignoring the finger holes.
- I obtained the correct results for this problem, but I do not understand why the friction is static. Also, the book is saying that if the ball were rolling uphill, the force of friction would still be directed uphill, which I do not understand as well.
I appreciate any helpful comments regarding these problems.
-Why does Kinetic Friction do no work if bodies roll without slipping? I thought it would add torque to provide more energy for rotational motion.
Situation: A solid bowling ball rolls without slipping down the return ramp at the side of the alley. The ramp is inclined at an angle beta to the horizontal. What are the ball's acceleration and the magnitude of the friction force on the ball? Treat the ball as a uniform solid sphere, ignoring the finger holes.
- I obtained the correct results for this problem, but I do not understand why the friction is static. Also, the book is saying that if the ball were rolling uphill, the force of friction would still be directed uphill, which I do not understand as well.
I appreciate any helpful comments regarding these problems.