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!
No; "centripetal" implies an inward force.
The centripetal force is equal to the gravitational force when a particular body is in a circle. For a body that is in an orbit, the gravitational force is equivalent to the centripetal force.
no, but rotation can produce centripetal force
Answer It is the force which keeps a body moving in circular motion. Centripetal force is the force that acts opposite to cetrifugal force. Centripetal force is a real force. Centrifugal force is a pseudo-force
The gravitational force IS the centripetal force in this case.
centripetal- Dashun Walden
Centripetal force is a force that is required to exist to have a circular motion. Thus the centripetal force can be any force that is able to accomplish this task. Examples of centripetal forces are the gravitational force, the electromagnetic force, the frictional force, or the constraint forces. The centripetal force depends on the system that is involved in be in a spin of a rigid body, or of a planetary motion, etc. Each particular system that requires a rotation or a spin needs to have a corresponding centripetal force.
Centripetal acceleration is proportional to the square of the speed (a = v2/r). Therefore, according to Newton's Second Law, centripetal force is also proportional to the square of the speed.
The centripetal force
Centripetal.
Centripetal force makes a satellite orbit a body.
A centripetal force is, by definition, a force that makes a body follow a curved path. So, yes, a centripetal force causes rotation about a point in space.