Center of MassMediumBloom L3

Question

A non–zero external force acts on a system of particles. The velocity and acceleration of the centre of mass are found to be v0 and aC respectively at any instant t. It is possible that

Options

A.(iii) and (iv) are true.
B.(i) and (ii) are true.
C.(i) and (iii) are true.
D.(ii), (iii) and (iv) are true.

Solution

Sol. ${\bar{F}}_{ext} \neq 0 \Rightarrow {\bar{a}}_{cm} \neq 0$

${\bar{V}}_{cm}(t)$may of may not be zero at any instant.

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