Classical mechanics

Total energy of body is sum of

• kinetic energies
• potential energies.
• forces.
• kinetic and potential eneries.

Energy can neither be created nor be destroyed, but it can be changed from one form to another. This law is known as

• kinetic energy.
• potential energies.
• conservation of energy
• conservation principle.

An artificial Satellite revolves round the Earth in circular orbit, which quantity remains constant?

• Angular Momentum
• Angular Momentum
• Angular Displacement
• liner mometum

 A man presses more weight on earth at :

• Sitting position
• Standing Position
• Lying Position
• rest

The rotational effect of a force on a body about an axis of rotation is described in terms of the

• Centre of gravity
• Centripetal force
• Centrifugal force
• Moment of force

 If no external force acts on a system of bodies, the total linear momentum of the system of bodies remains constant. Which law states that ?

• Newton's first law
• Newton's Second Law
• Newton's Third Law
• Principle of conservation of linear momentum

 Which law is also called the law of inertia ?

• Newton's first law
• Newton's Second Law
• Newton's Third Law
• ohm's law

 Energy possessed by a body in motion is called

• kinetic energy.
• potential energies.
• conservation of energy
• conservation principle.

Lagrangian L =

• T-V
• T+V
• (T-V)2
• (T+V)1/2

The path adopted by the system during its motion can be represented by a space of _______________ dimensions.

• 3N
• 6N
• 9N
• N