Explain the terms work and power . How will you evaluate the work done by a variable force? 22. State the law of conservation of energy .Illustrate this law in the case of a freely falling body.
Dear aspirant,
Work is the energy transferred from the object via the application of force along the displacement.
Power is basically the amount of energy transferred per unit time.
Work done by a variable force is the integral of F.dx where F is the force and dx is the displacement.