Show that the wor done by a force is equal to change in potential energy .

Choose the correct options – (1) )The work done by forces may be equal to change in kinetic energy (2)The work done by forces may be equal to change in potential energy (3) The work done by forces may be equal to change in total energy (4) The work done by forces must be equal to change in potential energy.

Work done by a force is given by w=oversetrightarrowF.oversetrightarrowS where oversetrightarrowF is the force and oversetrightarrowS is the displacement. Show that : Work done is also equal to change in potential energy using this expression.

Asseration : Displacement time graph of a particle moving in a straight line is shown in figure. Work done by all the forces between time interval t_(1) and t_(2) is definitely zero. , Reason : Work done by all the forces is equal to change in kinetic energy.

The total work done on a particle is equal to the change in its mechanical energy

The total work done on a particle is equal to the change in its kinetic energy

in the previous question, the change in potential energy.

Show that the impulse of a force is equal to the change in momentum produced by the force.

[" Question "7],[" The total work done on a particle is equal to the change in its kinetic energy "],[" o always "],[" only if the forces acting on the body are conservative "],[" o only in the inertial frame "],[" only if no external force is acting "]

A mass is taken from surface to a height h. The change in potential energy in this process is equal to the change in potential energy if it is now taken from that point to infinity. What is the value of h?