Question

A chain of length l starts sliding down from the horizontal surfaceof

Answer 1

A chain of length 'l' and mass 'm' lies on the surface of a smooth sphere of radius 'R' > 'l', with one end tied to the top of the sphere. (a) Find the gravitational potential energy of the chain with reference level at the center of the sphere. (b) Find the tangential acceleration dv/dt of the chain when the chain starts sliding down. ---------------------------------------------------------------------------------------- I was able to do the (a) part, which is a matter of simple integration and my answer came out to be {m R^2 g sin(l/R)}/l Can someone please help me out with the (b) part.

Reference https://www.physicsforums.com/threads/a-chain-sliding-on-a-sphere.476589/