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**1. Homework Statement**

Starting from rest, ahollow ball rolls down a ramp inclined at angle θ to the horizontal. Find an expression for its speed after it's gone a distance d along the incline.

**2. Homework Equations**

I for sphere = 2/5*M*R^2

**3. The Attempt at a Solution**

I know we have to use v^2=u^2+2ax

and we have to find the angular acceleration however I am not sure how to relate both of them.