Internal forces can change

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Question

(B) According to Newton's second law,the rate of change of linear momentum of a system is equal to the net external force acting on it $(F_{ext} = dp/

Vedclass · Accepted Answer

the kinetic energy but not the linear momentum of the system

Vedclass · Answer

(B) According to Newton's second law,the rate of change of linear momentum of a system is equal to the net external force acting on it $(F_{ext} = dp/dt)$. Therefore,internal forces cannot change the total linear momentum of a system.However,internal forces can do work on the particles of a system,which can change the internal configuration or the relative velocities of the particles,thereby changing the total kinetic energy of the system.

Similar Questions

State Newton's second law for a system of particles.

In a system of particles,internal forces can change (for the system)

$Assertion$ : If no external force acts on a system of particles,then the centre of mass will not move in any direction.
$Reason$ : If net external force is zero,then the linear momentum of the system changes.

Internal forces acting in a system of particles can change:

Why do internal forces acting within a system not affect its motion?

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