One-dimensional Collision When the children play marbles, then if one marble collides with another marble and after the collision if the marbles move in a straight line, then that collision is called one-dimensional collision. That…

Gravity: The force of attraction between the earth and any other body is called gravity. It is the force that attracts a body toward the center of the earth, or toward any other physical body…

Inelastic collision An inelastic collision is a collision in which there is a loss of kinetic energy. While momentum of the system is conserved in an inelastic collision, kinetic energy is not. You just make…

Elastic Collision When collision occurs between atoms or molecules and electrons, protons, neutrons etc. then total kinetic energy remains constant. This type of collision may be considered as total elastic collision. So, an elastic collision…

Application of Centripetal and Centrifugal Force: Motion of a cyclist along a curved path: During turning the cyclist automatically inclines toward inside i.e., towards the centre of the turning of the road (figure). As a…

Collision Sudden and large change of motion of a body by force acting for a very short duration is called collision. When two objects hit into each other, this is called a collision. Striking a…

Centrifugal force We know that for every body moving in a circular path a force act towards the centre of the circle i.e., a centripetal force acts. The earth rotates around the sun. Here gravitational…

Centripetal force According to Newton’s first law due to inertia of motion a moving body always intends to move in a straight line with uniform speed. So unless an external force is applied motion of…

Conservation of angular momentum From Newton’s first law for angular motion we know that change of angular velocity i.e., angular momentum occurs due to the action of external torque only. If there is no torque,…

Experiment: Determination of moment of Inertia of a Fly Wheel Theory: The flywheel consists of a weighty round disc/massive wheel fixed with a strong axle projecting on either side. The axle is mounted on ball…