Why is the centripetal force important?

Answer 1

It helps to tell your blood type.

Answer 2

By Newton's first law of motion, a force is essential to change the state of rest or of uniform motion along a straight line.

When the body is in the resting position, then a force is necessary to displace it.

When the body is in uniform motion, it means, it has a constant velocity. Velocity is a vector quantity. It has both the magnitude and direction.

If velocity is to be changed then the change can be brought by changing its magnitude or direction or both.

When a body moves along a circular path with a uniform speed, then its direction is changing at every instant. Hence its velocity undergoes a change. Then, according to Newton, there must be a force to bring such a change in velocity. That force is termed as centripetal force which means, the force is always seeking the centre ie directed towards the centre of the circle.

This centripetal if suppose ceases to exist, then the body instead going in the curved path it would go along the tangential path ie straight path with the speed available at that instant.

This centripetal is usually called as necessary centripetal force.

The necessary centripetal force in case of planets going around the sun is provided by the gravitational attraction between the earth and the sun.

In case of electron going round the nucleus, the electrostatic force of attraction between the electron and the protons within the nucleus fulfills the need.

In case of a charged particle going round in a magnetic field, the Lorentz magnetic force plays the necessary role.

In case of vehicle to go round a curved path, the frictional force between the tyre and the ground serves the purpose.

In case of a stone tied to a string making rotation, the tension in the string would be the centripetal force.

Answer 3

It helps to tell your blood type.

Answer 4

concentrate the urine