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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 7 - Work, Energy and Power > A particle is released from the top of two inclined rough surface of height h each. The angle of inclination of the two planes are 30^∘ and 60^∘ respectively. All other factors (e.g. coefficient of friction , mass of the block etc) are same in both the cases. Let K1 and K2 be the kinetic energy of the particle at the bottom of the plane in two cases. Then

A particle is released from the top of two inclined rough surface of height h each. The angle of inclination of the two planes are 30^∘ and 60^∘ respectively. All other factors (e.g. coefficient of friction , mass of the block etc) are same in both the cases. Let K1 and K2 be the kinetic energy of the particle at the bottom of the plane in two cases. Then

A particle of mass m is moving in a circular path of constant radius r such that centripetal acceleration is varying with time t as k^2 rt^2 where k is a constant. The power delivered to the particle by the force acting on it is