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Rotational Work and Energy 
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#1
Nov1303, 12:59 PM

P: n/a

I have no idea how to do this question
A tennis ball, starting from rest, rolls down the hill in the drawing. At the end of the hill the ball becomes airborne, leaving at an angle of 35° with respect to the ground. Treat the ball as a thinwalled spherical shell, and determine the range x. 


#2
Nov1303, 01:09 PM

P: 997

First off, do you know the moment of inertia equation for a thin walled sphere? If not you'll need it.
I'd use the conservation of energy equation to find the velocity at the bottom and then a simple range equation to find the distance. Range would be failrly straightforward here because ho=hf once the ball becomes airborn. That's how I would approach it. Good luck. 


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