order of motions

Uniform Circular Motion - The revolution of moon around the Earth and the revolution of an artificial satellite in a circular orbit round the Earth are examples of circular motion. Consider a particle moving with constant speed along the circumference of a circle of radius R in ..

Motion in One, Two and Three Dimensions - A body is said to be in motion if its position changes with respect to its surrounding. In order to completely describe the motion of such objects, we need to specify its position. For this, we need to know the positi..

In a lawn sprinkler when water sprays out of the nozzles, a backward force is exerted on the nozzle as a result of which it starts rotating. Consequently, water is sprayed in all directions. Consider a block of weight w resting on a horizontal surface. The block exerts a downward force of w on..

According to Newton's first law of motion every body continues to be in its state of rest or uniform motion along a straight line unless an external force acts on it. This means that a ball moving on a horizontal surface should continue to move indefinitely as no force is acting..

The figure above illustrates a body thrown horizontally from a point O with a velocity The point O is at a certain height above the ground. Let x and y be the horizontal and vertical distances covered by the projectile, respectively, in time t. Therefore, at time t, the projectile is at p. I..

Rutherford's model had a major drawback. It could not explain why ultimately electrons did not fall into the nucleus by taking a spiral path. This was in concurrence with the electromagnetic theory that states 'if a charged particle undergoes accelerated motion then it must radiate energy..

A real object can rotate as it moves. For example, a cricket ball may be spinning while it is moving, as a whole, in a trajectory. Also, a body may vibrate as it moves, for example, a falling water droplet. These complications can be avoided by considering the motion of a very small body ..

The liquid state lies between the gaseous and the solid state. Liquids are neither completely disordered nor completely ordered. The cohesive forces between the liquid particles are strong enough to keep them together but these particles do not occupy fixed lattice sites and are relativel..

The substances whose constituents are arranged in definite orderly arrangements are called crystalline solids. Many naturally occurring solid substances occur in the crystalline form. Some common examples of crystalline solids are sodium chloride, sulphur, diamond, sugar, etc. They have ..

In order to understand the origin of these forces, consider two helium atoms very close to each other. The ground state electronic configuration of helium is 1s 2 .Each helium atom is uncharged because its electron cloud is symmetrically distributed around the nucleus. In the most favou..