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A body can execute circular motion only if there's a force acting on it, directed

towards the center of the circle. Without that force, circular motion isn't possible.

If you expected us to get into "centrifugal" force, forget about it. No such force exists.

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Q: Why a body in uniform circular motion experiences a force?
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Related questions

Does the centripetal force acting on an object in uniform circular motion do work on the object?


What factors affect the increase of the centripetal force on a particle in uniform circular motion?

Increase in radius affect the increase of the centripetal force on a particle in uniform circular motion. An increase in radius would cause a decrease in the force if velocity remains constant.

Factors that affect tha increase of centripetal force in uniform circular motion?


How must the net force depend on the speed of the moving object in order to obtain uniform circular motion?

The force required to keep a body to be in a uniform circular motion is known as centripetal force means centre seeking force. This centripetal force is directly proportional to the square of the speed of the particle.

Why tangential acceleration is not produced in uniform circular motion?

Because there is no tangential force acting on the object in uniform circular motion. The proof that there is no tangential component of acceleration is the fact that the tangential component of velocity is constant.

Since an object moving in uniform circular motion keeps a constant speed there is no force necessary to keep it in motion?


What fictitious force seems to push objects outward from the center of a circle when it is in uniform circular motion?

That's 'centrifugal' force.

Uniform linear motion vs uniform circular motion?

Linear motion goes in a straight line (apply laws of physics: a body in motion will stay in motion unless otherwise impeded, most often by some type of friction or another body). Circular motion (or non-linear motion) involves revolutions and creates centrifigal force (measured in G's if you're in the air force)

3 What factors affect the increase of the centripetal force on a particle in uniform circular motion?

Speed, friction, momentum, and conservation of motion

What is the origin of centripetal force?

Centripetal force is the resultant force acting towards the centre of orbit of an object undergoing uniform circular motion.

What two quantities is necessary for uniform circular motion?

The only thing required for an object to show uniform circular motion is a constant centripetal force. The object will have constant speed and kinetic energy, but its velocity, acceleration, momentum, and displacement will change continuously.

Circular motion occurs only near the earths surface?

False. A contra example; Triton has a circular motion about Neptune Newton's first law of motion: a body remains a rest or in uniform motion in a straight line unless acted upon by a force. If there is a centripetal force towards a point acting on a body that is moving then that body will have circular motion. The body and point do not have to be on earth.