Home
Class 12
PHYSICS
A shell at rest on a smootyh horizontal ...

A shell at rest on a smootyh horizontal surface explodes into two fragments of masses `m_(1)` and `m_(2)`. If just after explosion, `m_(1)` move with speed u, then work done by internal forces during explosion is :-

A

`(1)/(2)(m_(1)+m_(2))(m_(2))/(m_(1))u^(2)`

B

`(1)/(2)(m_(1)+m_(2))u^(2)`

C

`(1)/(2)m_(1)u^(2)(1+(m_(1))/(m_(2)))`

D

`(1)/(2)(m_(1)-m_(2))u^(2)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • RACE

    ALLEN|Exercise Basic Maths (ROTATIONAL MOTION)|60 Videos
  • RACE

    ALLEN|Exercise Basic Maths (GRAVITATION)|25 Videos
  • RACE

    ALLEN|Exercise Basic Maths (CIRCULAR MOTION)|16 Videos
  • NEWTONS LAWS OF MOTION

    ALLEN|Exercise EXERCISE-III|28 Videos
  • SIMPLE HARMONIC MOTION

    ALLEN|Exercise Example|1 Videos

Similar Questions

Explore conceptually related problems

A stationary body explodes into two fragments of masses m_(1) and m_(2) . If momentum of one fragment is p , the energy of explosion is

A stationary body explodes into two fragments of masses m_(1) and m_(2) . If momentum of one fragment is p , the energy of explosion is

Consider a body at rest in the L-Frame, which explodes into fragments of masses m_(1) and m_(2) . Calculate energies of the fragments of the body.

A bomb at rest explodes into two parts of masses m_(1) and m_(2) . If the momentums of the two parts be P_(1) and P_(2) , then their kinetic energies will be in the ratio of:

A bomb of mass 3 m kg explodes into two pieces of mass m kg and m kg . If the velocity of m kg mass is 16 m / s , the total kinetic energy released in the explosion is

A projectile of mass mis fired with an initial velocity v_(0) at an angle 0 to the horizontal. At its highest point, it explodes into two fragments of equal mass. One of the fragments falls vertically with zero initial speed. Since the only external force acting on the system is gravitational, the motion of centre of mass of the_ system (the fragments) follows the same parabolic path as the projectile would have followed if there had been no explosion. Force of explosion is internal, it cannot change the trajectory of the system.

A srtone of mass m_(1) moving at uniform speed v suddenly explodes into two fragments. If the fragment of mass m_(2) is at rest, the speed of the other fragment is

An object of mass 3m, initially at rest, explodes breaking into two fragments of mass m and 2m, respectively. Which one of the following statements concerning the fragments after the explosion is true?