How centripetal force works?

Answer 1

When the trajectory of an object travels on a closed path about a point --

either circular or elliptical -- it does so because there is a force pulling

the object in the direction of that point. That force is defined as the

CENTRIPETAL force. It has not been more simply, or directly stated than by

one Isaac newton in his famous "Principia" (definition 5):

"A centripetal force is that by which bodies are drawn or impelled, or any

way tend, towards a point as to a center."

This force can be demonstrated by twirling a ball on a string, and either

actually or conceptually cutting the string. The ball's trajectory is then a

straight line tangential to the closed trajectory at the instant the string

is cut. This is also illustrated by what happens to the ball in the "hammer

throw" of Track and Field. The athlete spins the heavy ball around several

times then lets it fly. It takes off in a straight line (not quite, because

the hammer is actually not spun parallel to the ground, but that is not

relevant).

In industry Man uses centripetal motion in 2 ways:

1. The fuel, and or steam engine, by use of a crank shaft, converting linear motion into centripetal rotary motion. To role the wheals of cars etc.

2. On the jet engine, the reverse occurs, the centripetal rotary motion of fans, convert rotory motion to linear motion. High velocity exhausts to drive jet aitcraft, and such.

In both cases, The latent energy of fuel is required, to provide the original moment: The only energy available to have rotated Planet Earth, through the theoretical multi thousands of years; G = god! The big god Jehovah!