Question

state the factors on which the position of centre of mass of a rigid body depends. show that in the absence of any external force the velocity of centre of mass remains constant.​

Answer 1

Answer:

Explanation:

M for mass  

And V for velocity.

When there is not external force the acceleration of body is zero.

The velocity of the body will be  

′

v  

′

 

Force= rate of change of momentum  

⇒F=d(mv)/dt

⇒m(dv/dt)=F

The external force F=0

M(dv/dt)=0

dv/dt=0

M is not zero

So this proves that velocity will always be constant in such scenario