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because angle between r n F is zero, both r parallel.

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12y ago

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Why centripetal force can not produce torque?

Torque is proportional to the distance between the center and the line of force. Centripetal force acts toward the center along the radius, so the distance between the center and the line is zero. (When your car is up on the lift, you can't make a wheel rotate by pushing on the hub.)


How it is possible for a large force to produce only a small or even zero torque?

A large force can produce a small or zero torque if the force is applied at a point where the lever arm (distance from the point of rotation to the line of action of the force) is very small or zero. Torque is calculated as force multiplied by lever arm, so a small lever arm can result in a small or zero torque even with a large force.


Can a force produce a torque when there is no lever arm?

no because to get a torque you must multiply lever arm by force. If lever is zero, then torque is zero


Why does work done by centripetal force is zero?

An object moves in a circle at constant speed. The work done by the centripetal force is zero because: 1. the displacement for each revolution is zero 2. the average force for each revolution is zero 3. there is no friction 4. the magnitude of the acceleration is zero 5. the centripetal force is perpendicular to the velocity


Is Work done by centripetal force is zero?

An object moves in a circle at constant speed. The work done by the centripetal force is zero because: 1. the displacement for each revolution is zero 2. the average force for each revolution is zero 3. there is no friction 4. the magnitude of the acceleration is zero 5. the centripetal force is perpendicular to the velocity


Why work done by centripetal force during half rotation is zero?

The centripetal force always acts perpendicular to the displacement of the object moving in a circular path. Since the work done is the product of force and displacement in the direction of force, and the displacement is perpendicular to the centripetal force, the work done by the centripetal force over a full rotation is zero.


When A force of 5 newton is acting parallel to the moment arm of 10 cm . so what is torque?

In order for a force to produce a torque, either all of it, or a part of it (component) must act perpendicular to the moment arm. If, as in your case, all of the force is parallel to the moment arm then the force can not produce a torque. So the answer is; the torque is zero.


Centrifugal force is reactionary force of centripetal force?

Yes true. But they need not be got cancelled though their resultant is zero.


Is there any torque if force is zero?

NO. not at all b/c torque is directly related to force


How do you Convert Torque Nm to Force N?

Torque T=Nmsin x, thus Force N=T/msin x. If sin x is zero Torque is zero and Force is zero.


Why is the workdone by centripetal force is zero?

The work done by a centripetal force is zero because the force is always directed towards the center of the circular motion, while the displacement is perpendicular to the force. This means that the angle between the force and the displacement is 90 degrees, resulting in zero work being done.


Give an example of a case when the resultant force is zero but resultant torque is not zero?

A couple.