motion and momentum

Momentum Conservation and Motion of Centre of Mass - As we know, the linear momentum of a particle is defined as , where m is the mass and is the velocity, the momentum of an N particle system is the vector sum of the momenta of the N particles. If the extern..

If the external forces acting on the system add up to zero, the centre of mass moves with constant velocit..

It is a dynamic property which a body possesses due to the combined effect of mass and velocity. A rolling marble can be stopped more easily than a bowling ball moving at the same velocity. Both objects have inertia of motion, or momentum. However, the bowling ball has more ..

Consider a car and a bicycle moving at the same velocity. Now, if you could somehow use the same brake system on both vehicles, the bicycle will stop first. Why do think so? Is it because the bicycle is lighter? Yes, it is because the bicycle is lighter. This makes us think of a new property of a b..

From Newton's third law of motion we know that whenever a force is applied on a body there will be an equal and opposite reaction. Action and reaction forces result in change in velocities of both the bodies which in turn change the momenta of these bodies. In an elastic collision the ini..

Motion of Particles and Rigid Body..

Newton's second law of motion states that rate of change of momentum is directly proportional to applied force and takes place in the same direction as the applied forc..

Newton's Second Law of Motion - Earlier we have mentioned that application of force can change the velocity of the moving object. Let us suppose that a body of mass 'm' is moving with a velocity 'u'. When a force F is applied on the body for 't' seconds, the velocity changes from the init..

The rate of change of momentum of a body is proportional to the applied force and takes place in the direction in which the force is applie..

Summary - The centre of mass is an imaginary point where one can assume the entire mass of the given system or object to be positioned. Principle of conservation of linear momentum states that the linear momentum of a system remains constant if the external forces acting on the ..