- #1

barryj

- 799

- 44

## Homework Statement

See attached diagram and statement of problem

## Homework Equations

Conservation of momentum ...

mv = MV + mv/2

mv/2 = MV

V = mv/(2M)

centripetal force...centripetal force equals weight at top of circle.

MV^2/L = Mg

V^2 = Lg

V = (Lg)^.5

## The Attempt at a Solution

Set V = V

mv/(2M) = (Lg)^.5

v = 2M(Lg)^.5/m

The answer is supposed to be v = 4M(Lg)^.5/m

I am off by a factor of 2 where did I go wrong???