IIT-JEE 1994

A block of mass 0.1 is held against a wall applying a horizontal force of 5 N on the block. If the coefficient of friction between the block and the wall is 0.5, the magnitude of the frictional force acting on the block is:

An object of mass 0.2 kg executes simple harmonic oscillation along the x-axis with a frequency of \(\left( {{{25} \over \pi }} \right)\) Hz. At the position x = 0.04, the object has kinetic energy of 0.5 J and potential energy 0.4 J. The a...

A particle of mass m is moving in a circular path of constant radius r such that its centripetal acceleration \({a_c}\) is varying with time t as \({a_c}\) = k2rt2 where k is a constant. The power delivered to the perticles by the force act...