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The Effort Arm Of A Lever is 4m Long And the Load Arm Is 8m Long. Find The Effort Required to Lift a Load of 20N
Solution:
Effort arm = 4m
Load arm = 8m
Load = 20N
Effort = ?
$Load \times Load \ arm = Effort \times Effort \ arm$
$20N \times 8 m = Effort \times 4 m$
Effort required = $20 \times \frac{8}{4}$ = 40N
So the Effort required to lift a load of 20N is 40N
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