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)|72 Videos
  • RACE

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

    ALLEN|Exercise Basic Maths (CIRCULAR MOTION)|17 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 5m at rest explodes into three parts of masses 2m , 2m and m . After explosion, the equal parts move at right angles with speed v each. Find speed of the third part and total energy released during explosion.

A stone 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

A bomb of mass m is projected from the ground with speed v at angle theta with the horizontal. At the maximum height from the ground it explodes into two fragments of equal mass. If one fragment comes to rest immediately after explosion, then the horizontal range of centre of mass is

An object of mass 5 kg is projecte with a velocity of 20ms^(-1) at an angle of 60^(@) to the horizontal. At the highest point of its path , the projectile explodes and breaks up into two fragments of masses 1kg and 4 kg. The fragments separate horizontally after the explosion, which releases internal energy such that K.E. of the system at the highest point is doubled. Calculate the separation betweent the two fragments when they reach the ground.

A projectile of mass 3kg is projected with velocity 50m//s at 37^@ from horizontal. After 2s , explosion takes place and the projectile breaks into two parts of masses 1kg and 2kg . The first part comes to rest just after explosion. Find, (a) the velocity of second part just after explosion. (b) maximum height attained by this part. Take g=10m//s^2

A stationary shell explodes into two fragments, having masses in the ratio of 1:2. The heavier fragment attains a Kinetic energy of 100J. The Kinetic energy released in the explosion is: