A uniform rod of mass 2kg and length `l` is lying on a horizontal surface. If the work done in raising one end of the rod through an angle `45^(@)` is `'W'`, then the work done in raising it further `45^(@)` is

A uniform rod of mass 2kg. And length 1m is lying on a horizontal surface. If the work done in raising one end of the rod through an angle 45^(@) is .W., the work done in raising it further through 45^(@) is,

A rod of mass m and length l is lying on a horizontal table. Work done in making it stand on one end will be

A rod of mass m and length l is lying on a horizontal table. Work done in making it stand on one end will be

A uniform rod of length 2m and mass 5kg is lying on a horizontal surface. The work done in raising one end of the rod with the other end in contact with the surface until the rod makes an angle 30^(@) with the horizontal is (g=10ms^(-2))

Work done in raising 100 kg coal to 100 m height is :

A uniform rod AB of mass m and length l at rest on a smooth horizontal surface . An impulse P is applied to the end B . The time taken by the rod to turn through a right angle is :