Two point masses of mass 4m and m respectively separated by d distance are revolving under mutual force of attraction. Ratio of their kinetic energies will be :

Question

TestHub · Accepted Answer

With no external force, the momenta are equal and opposite: p 1 ​ = p 2 ​ = p . Kinetic energy is 2 m p 2 ​ , so K E m ​ K E 4 m ​ ​ = 4 m m ​ = 4 1 ​ . Ans (A)

Question with Solution

Options:

Doubts & Discussion