The resultant of all the external forces acting on a system of particles is zero, then from an inertial frame, one can surely say that

The resultant of all the external forces acting on a system of particles is zero, then

Question

the resultant of all the external forces acting on a system of particles is zero, then from an inertial frame, one can surely say that

(A) linear momentum of the system does not change in time

(B) kinetic energy of the system does not change in time

(C) angular momentum of the system does not change in time

(D) potential energy of the system does not change in time


Answer


KE & PE can change (e.g blocks at ends of spring) L can change (if resultant is net torque)



22nd February 2019

Ritish singh

By