What is Torque? Definition, Meaning & Example
Torque is a measure of how much a force causes an object to rotate around a pivot point.
TL;DR: Torque is a measure of how much a force causes an object to rotate around a pivot point.
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Torque: Torque is a measure of how much a force causes an object to rotate around a pivot point.
Explanation
Torque equals the force applied multiplied by the perpendicular distance from the pivot point, called the lever arm. Torque is a vector quantity measured in newton-meters. Greater force or longer lever arm produces greater torque. A door opens easier when you push far from the hinge because the lever arm is longer. Torque is essential in rotational motion just as force is essential in linear motion. Torque can be clockwise or counterclockwise. The net torque determines rotational acceleration. Understanding torque is important in mechanics, engineering, and understanding how levers and machines work.
Example
It is easier to open a door by pushing on the edge far from the hinge than pushing near the hinge, even with the same force, because the lever arm is longer.
Frequently Asked Questions
How is torque different from force?
Force causes linear acceleration while torque causes rotational acceleration. Force is applied at a point while torque depends on both the force and its distance from the pivot. They are analogous concepts for linear and rotational motion.
Why does the distance from the pivot matter for torque?
The lever arm distance amplifies the effect of the force. A force applied farther from the pivot creates more torque, making rotation easier. This is why long wrenches make loosening bolts easier than short wrenches.
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