Question

Which of the following statement is not true in the context of above system

• A. centre of mass reference frame is an inertial frame.
• B. kinetic energy of the system is minimum in centre of mass frame.
• C. at the instant of maximum deformation both the blocks are instantaneously at rest in centre of mass reference frame.
• D. acceleration of centre of mass is constant is ground frame.

Answer 1

The correct option is A centre of mass reference frame is an inertial frame.

A frame of reference that moves with constant velocity with respect to an inertial frame is also an inertial frame.

But in this case there is a constant acceleration applying continuously on this system, so this is a non-inertial frame.