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If the resultant of all the external for...

If 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 may change in time

D

potential energy of the system does not change in time.

Text Solution

Verified by Experts

The correct Answer is:
A, C
`Sigma vec(F)_("ext") = vec(0) rArr vec(P) = ` constant So, option (A) is correct.
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