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M1ZeN

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## Homework Statement

A hollow ball goes down a frictionless ramp. The ball starts at a height of 5 m. The ball has a radius of 4 cm and a mass of 0.5 kg.

(a) What is the final velocity of the ball at the ball at the bottom of the ramp if it just slides down the ramp to a final height of 0 m. (Assume no rolling)

(b) If the work done (by gravity on the ball) was used to rotate the sphere instead, what would the angular velocity of the ball be?

## Homework Equations

I have no clue. I went through the section in my textbook that seems to relate to this practice test problem but they none of them seems to be anything I could use.

## The Attempt at a Solution

Again, being I can't find any formulas or equations to work with. I don't know where to start with the values given.

Thanks

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