Question

A particle of mass m, moving with velocity 'u' makes head on collision with identical stationary
particle, which is elastic. The force of interaction increases to maximum and then becomes zero in
time T as shown in graph. What is the maximum value F, of interaction force ?
1)mu/T
2)2mu/T
3)3mu/T
4)4mu/T​

Answer 1

Answer:

2)2mu/T

Explanation:

In an elastic one-dimensional collision, particle rebounds with the same speed in opposite direction.

So, change in momentum = 2 mu

But, impulse = F×T = Change in momentum

⇒F

0

×T=2mu

or F

0

=

T

2mu

Hope his answer will help you.