An effort P applied at one end of a crowbar just overcome...
An effort P applied at one end of a crowbar just overcomes the resistance W at the lid of a tin. The mechanical advantage of the crowbar is expressed as
W + P
P - W
\(\frac{w}{p}\)
\(\frac{p}{w}\)
wp
Correct answer is C
No explanation has been provided for this answer.
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