Work done by a body against friction always results in a loss of its kinetic/ potential energy.

Show that work done on a body or by the body is equal to the net change in its kinetic energy.

Obtain an expression for gravitational potential energy of a body.

When an air bubble rise in water, what happens to its potential energy?

Define moment of inertia of a body capable of rotation about an axis. Show that the moment of inertia of a body an axis is numerically equal to twice its kinetic energy if it rotates with unit angular velocity.

When a body of mass 'm' moves with a velocity 'v' its kinetic energy-

The time period of SHM is 8 sec. At what time from mean position kinetic energy becomes half of its potential energy.

An object of mass 40 kg is raised to a height of 5 m above the ground. What is its potential energy? If the object is allowed to fall, find its kinetic energy when it is half way down.

A ballon filled with hydrogen rises upward gaining both kinetic and potential energy.Does it imply violation of conservation of energy?

How much work is done in moving a charge of 4C across two points having a potential difference 24V?