Torque is a measure of the force that causes an object to rotate around an axis or pivot point. It is calculated by multiplying the force applied by the distance from the axis. In terms of work, torque can either increase or decrease the rotational motion of an object, but it does not result in any displacement or change in the object's position. Therefore, torque does no work in situations where there is no rotational motion or change in position.
Yes, torque can do work in situations where there is a rotational motion or change in position. For example, when using a wrench to loosen a bolt, the torque applied results in rotational motion and does work to loosen the bolt. However, if the bolt is already loose and there is no change in position, the torque applied does no work.
One example is a pendulum swinging back and forth. The torque caused by the force of gravity does not result in any change in the position of the pendulum, therefore it does no work. Another example is a spinning top, where the torque applied by the force of friction does not cause any change in position.
Friction can both increase or decrease the work done by torque. In situations where there is no rotational motion or change in position, friction can prevent torque from doing any work. However, in situations where there is rotational motion, friction can either assist or resist the torque, resulting in an increase or decrease in the work done.
Torque and work are related but different concepts. Torque is a measure of the force that causes rotational motion, while work is a measure of the force that causes displacement. Torque does no work in situations where there is no change in rotational motion, but it can do work in situations where there is a change in rotational motion. Work, on the other hand, always results in a change in position.