Question
State the principle of a lever ?
✓
Answer
Principle: A lever works on the principle of moments. For an ideal lever, it is assumed that the lever is weightless and frictionless. In the equilibrium position of the lever, by the principle of moments,
Moment of load about the fulcrum=Moment of the effort about the fulcrum.
Load × Load arm = Effort × Effort arm.
Moment of load about the fulcrum=Moment of the effort about the fulcrum.
Load × Load arm = Effort × Effort arm.
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