Doubt in uniform circular motion

In summary, the concept of velocity and circular motion are closely related, but they are not the same. While velocity involves the change in direction, circular motion involves constant change in direction. It is possible for a particle in circular motion to have constant speed, but its velocity will still be changing. Motion in a helical path is an example of this, where the particle has constant speed but changing velocity due to the changing direction. With natural coordinates, it can be proven that a particle with constant speed and a non-zero acceleration will have circular motion, while a particle with zero acceleration will have a straight line trajectory.
  • #1
manimaran1605
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why are we considering speed is constant to find velocity a particle in uniform circular motion, is it possible for a particle in a circular motion to have constant velocity?
 
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  • #2
manimaran1605 said:
why are we considering speed is constant to find velocity a particle in uniform circular motion, is it possible for a particle in a circular motion to have constant velocity?

That doesn't make much sense, doesn't it?

BY DEFINITION, velocity is a vector, and circular motion involves something moving in a circle, i.e. CHANGING its direction all the time.

Zz.
 
  • #3
The velocity in circular motion is necessarily everchanging, the speed need not be, and might well remain constant.
 
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  • #4
STOP SHOUTING !,! Makes my eyes ache. :)
Motion in a helical path might interest you, this could be a combination of circular motion...where you have constant speed but changing velocity because of the changing direction. You could also have the circle moving at constant velocity to trace out the helix. This sort of 'circular' motion is common with electron beams.
 
  • #5
by use of natural coordinates, it is very easy to prove that with constant speed and a fixed non-zero acceleration, the particle's motion must be circle. Moreover, if the particle's acceleration is zero, its trajectory is a straight line. I am a college teacher, believe in me.
 

1. What is uniform circular motion?

Uniform circular motion is a type of motion where an object travels along a circular path at a constant speed. This means that the object's speed remains the same, but its direction is constantly changing.

2. Why is there doubt in uniform circular motion?

Doubt in uniform circular motion arises when there is uncertainty about the factors that affect the object's motion, such as the forces acting on it or the properties of the circular path.

3. How is uniform circular motion different from other types of motion?

In uniform circular motion, the object's speed is constant, but its direction changes. In other types of motion, such as linear motion, the speed and direction can both change.

4. Can an object experience uniform circular motion without a force acting on it?

No, an object cannot experience uniform circular motion without a force acting on it. According to Newton's first law of motion, an object will continue in its state of rest or motion unless acted upon by an external force.

5. How is uniform circular motion related to centripetal force?

Uniform circular motion is directly related to centripetal force, which is the force that keeps an object moving in a circular path. Without this force, the object would continue in a straight line tangent to the circular path.

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