Hello Vikas,

Force can be thought as of any pull or push or any activity, that causes change in state of the object on which it is applied. Force causes body to move or come at rest. It is respnsible for change in overall energy of the body. Force is necessary for doing work and the formula for calculating force is the product of mass of the body and the acceleration produced due to the force. It is a vector quantity.

Types of force:

• Contact Forces: Applied force, Normal force, Frictional force, Tension force, Air resistance force, Spring force, bouyant forces, muscular force, etc.
• Non contact forces: Magnetic, gravitational, electromagnetic force.

Hope this helps.

Regards