Question

In the figure below a crowbar is used to lift a weight. If a down ward...

In the figure below a crowbar is used to lift a weight. If a down ward force of 224 N is applied to the end of the bar, how much weight does the other end bear? The crowbar itself has negligible weight. (Let r1 = 29.0 cm and r2 = 5.40 cm.)

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Answer #1

Solution)

Here,

Considering, moment about the point where the crowbar touches the ground,

We have,

224*r1=w r2

So,

Weight, w=224 N*29 cm/5.4 cm = 1202.96 N

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