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## Homework Statement

A ball with mass m with an initial velocity of 5 m/s strikes a ball with a mass of 3m hanging at rest from a string 50 cm long. Find the maximum angle(x) with which the block swings after its hit.

## Homework Equations

k=1/2mv^2

p=mv

## The Attempt at a Solution

Well first I solved the momentum

mAvA1+mBvB1=mAvA2+mBvB2

to get vB2=5-vA2

Then I used conservation of energy to get

[tex]sqrt {25 - v_{A2}/3} [\tex]

I solved the two equations for vB2 and got 3.53 m/s

So, since the kinetic energy from the start of the mass on the pendelum moving to its peak is h=(.5-.5cosx)

1/2m(vB2^2)=mg(.5-.5cosx)

I solved for the angle and got 50.2 degrees.

Anyone see anything wrong with my math or my logic? I can only attempt the problem one more time before the program gives me no credit.