Center of MassHardBloom 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.
Create a free account to view solution
View Solution FreeMore Center of Mass Questions
In which of the following cases the centre of mass of a system is certainly not at its centre ?...If the thrust force on a rocket which is ejecting gases with a relative velocity of 300 m/s, is 210 N. Then the rate of ...A sector cut from a uniform disk of radius 12 cm and a uniform rod of the same mass bent into shape of an arc are arrang...A uniform rod of mass m and length 2l lies on smooth horizontal surface. A particle of same mass m is connected to strin...A wagon filled with sand has a hole so that sand leaks through the bottom at a constant rate λ. An external force a...