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## Homework Statement

A mass is suspended from a crane by a cable of length L. The crane and the mass is moving at constant speed V. The crane stops and the mass on the cable swings out.

What is the angle that the mass swings?

If the angle is 50 degrees and L=6m, what is the initial speed of the crane?

## Homework Equations

## The Attempt at a Solution

For the first part where it asks for the angle, since no numbers are given I assume they're just asking for the equation. My attempt at this is using the equation

__PE=mgh__where h=L(1-cosθ) so it'll be PE=mgL(1-cosθ). The second part for the initial speed can be solved by (PE + KE)initial =(PE+KE)final.