Question

If $F_{e}xt=0,$, then for a system,the momentum of different parts of the system changes in such a way that total momentum of the system remains constant.

• A. True
• B. False

Answer 1

The correct option is A True

1. According to the conservation of linear momentum," if the net external force acting on the system is conserved, then the linear momentum of the system remains constant."
2. Consider the N-particle system, if the external force of the system is zero that is $F_{e}xt=0,$then the vector sum of individual momenta remains constant.
   $\overrightarrow{P}=\overrightarrow{P_1}+\overrightarrow{P_2}+\overrightarrow{P_3}+...+\overrightarrow{P_N}$= constant.
   The individual momentum of the particles can change, but this change takes place in the way that the total momentum of the system remains constant.

Hence, the given statement is True.