- #1

Fromaginator

- 8

- 0

## Homework Statement

A 29.0 g ball is fired horizontally with initial speed v

_{0}toward a 100 g ball that is hanging motionless from a 1.10 m-long string. The balls undergo a head-on, perfectly elastic collision, after which the 100 g ball swings out to a maximum angle θ

_{max}= 50.0°

see image for question

## Homework Equations

K

_{i}+ U

_{i}= K

_{f}+ U

_{f}

vp = √[2*g*L*(1 - cosθ)]

mb*v0 = mp*vp + mb*vb

## The Attempt at a Solution

I suspect you have to use the mass ratio and it's relation to the ratio of momentum or kinetic energy, but I have been unsuccessful in getting the correct answer. The tried answers are availible along with the question in the image.