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## Homework Statement

A ball on a 6.5 m long string swings down and wraps around a post that is 4.0 m below the post the string is attached to. If the ball is released level with the post to which it is attached, what will be the velocity of the ball when it is at its highest point over the lower post?

## Homework Equations

circular momentum? Inertia of a ball on a string

## The Attempt at a Solution

I really have no idea where to start on this problem, i was thinking you start with the initial acceleration of 9.8 due to gravity but that doesnt translate to an initial angular velocity.