Jump to content

CirculaR

koolman
in Modern and Theoretical Physics

Featured Replies

Which force balances centripetal force .

 

For example if we are rotating a ball tied with a string then centripetal force is acting inwards . Then which force balances it . And the centrifugal force is pseudo force.

Centripetal force is not balanced and an object executing circular motion is not in equilibrium.

  • Author

Then why will it rotate it would collapse

Newton's first Law requires the body to continue movement in a straight line unless acted on by an external force.

 

In the case of circular motion, that force is called centripetal force.

 

Because centripetal force is a real force something has to provide it.

 

That something can be the tension in a string or the force of gravity or an electromagnetic force or a sideways push (reaction) on a moving fluid from a pipe or many other mechanisms.

Each one has the general term centrifugal but also a particular name depending upon its source.

Edited by studiot

A ball revolving around you in circular motion is accelerating. It must be accelerating, or else it would move in a straight line, as studiot has pointed out. Since there must be a net force, you can't have a force balancing it.

You could also say that you and the ball are stationary and the ball is pulled outwards by gravitational force caused by the relativistic effects of the universe rotating around you. :wacko:

You could also say that you and the ball are stationary and the ball is pulled outwards by gravitational force caused by the relativistic effects of the universe rotating around you. :wacko:

 

But you would be wrong within currently understood physics, so that would be a bad idea.

 

You could also say that you and the ball are stationary and the ball is pulled outwards by gravitational force caused by the relativistic effects of the universe rotating around you. :wacko:

But you would be wrong within currently understood physics, so that would be a bad idea.

 

Seems I was wrong about the meaning of :wacko:. :(

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Configure browser push notifications
Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.