Circular motion

[samagra]

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.

[drleviathan]

There is no balancing force.

Force = mass * acceleration ---> acceleration = Force / mass

The force acts and there is a resulting non-zero acceleration toward the center of the circle.

[jszirani]

Sorry, my first answer was a bit off. Lemme try again:


The string act as a distance constraint between the ball and the center.

This is what give your inward force that counter the outward one.

If the string could stretch, then the force would be damping.

[Basroil]

There is no balancing force.

Force = mass * acceleration ---> acceleration = Force / mass

The force acts and there is a resulting non-zero acceleration toward the center of the circle.

There's definitely no "balancing" force since the object changes acceleration but there is a countering "force" in the body inertia, and a rope tension force that imparts the force to change acceleration. Perhaps he was asking how to calculate the necessary tension force? It would still give the same answer you gave anyway