Ask & Answer: India's Largest Education Community

A flywheel of mass 50 kg and radius of gyration about its axis of rotation of 0.5 m is acted upon by a constant torque of 12.5 N m. Its angular velocity at t = 5 s is

A wire can be broken by a load of 20 kg-wt. The force required to break wire of same material with twice the diameter will be

The height at which the weight of an object becomes (1/16)^th of its weight on the surface of earth is (R is radius of earth)

A body is released from height equal to radius R of the earth. The velocity of body with which it will strike the earth surface is

Two bodies of mass 10 kg and 2 kg are moving with velocities m/s and  m/s respectively. The velocity of their centre of mass is

In stable equilibrium position, a body has

A particle moves along x axis from x = 1 m to x = 3 m under the effect of the force F = 3x² – 2x + 5 N. Work done in process is