Laws of MotionHard

Question

Two masses m1 and m2 (m1 < m2) are released from rest from a finite distance. They start under their mutual gravitational attraction-

Options

A.acceleration of is more than that of m2
B.acceleration of m2 is more than that of m1
C.center of mass of system will remain at rest in all the reference frame
D.total energy of system does not remain constant

Solution

Same force acts on Both mars
Hence a ∝         (F = ma )
In absence of external force (remember mutual gravitational force is an internal force for the system) total energy remains constant.

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