Centre Of Mass Ques 26
- 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
(2009)
(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
Show Answer
Answer:
Correct Answer: 26.(a)
Solution:
Formula:
Motion of Centre of Mass and Conservation of Momentum:
- On a system of particles if, $\Sigma \mathbf{F} _{\text {ext. }}=0$
then, $\quad \mathbf{p} _{\text {system }}=$ constant
No other conclusions can be drawn.
BETA
