Center of MassEasy
Question
Two particles which are intially at rest, move towards each other due to the action of their internal attraction. If their speed are v and 2v at any instant, then the speed of the centre of mass of the system will be
Options
A.2 v
B.zero
C.1.5 v
D.v
Solution
As no external force is acting on the system, the center of mass must be at rest i.e.,
vCM = 0
vCM = 0
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