IIT JEE , AIEEE Forum - Physics , Mechanics

garima4

page no.163 exercises

problem no. 56

kewlslayer

for mass m

mgl=1/2m v1^2

find initial velocity v1

similarly

2mgl=1/2mv2^2

v1 and v2 will be the velocities of m and 2m

use momentum conservation and the

e= relative velocities after collision/rel velocities before collision

u will get two equations and two variable

solve it to get the vel after collision

for the seccond part use energy conservation

to find the heights

krishna.gopal

Perfect answer Kewlslayer. Well done.