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Question

What is a lever? State its principle.

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Solution

A lever is a machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum. A lever is a rigid body capable of rotating on a point on itself

The principle of the Lever. It has been found by experiment that two equal forces acting in opposite directions, i.e., clockwise and counterclockwise, and applied to a uniform level at equal distances from the fulcrum counteract each other and establish a state of equilibrium, or balance, in the lever.


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