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A mechanc unsrew a nut by applying a for...

A mechanc unsrew a nut by applying a force of 140 N with a spanner of length 40 cm . What should be the length of the spanner if a force of 40 N is applied to unsrew the same nut ?

Text Solution

Verified by Experts

Given `F_(1)=140N, d_(1)=40cm, f_(2)=40N, d_(2)=?`
In both the cases, moment of forces applied are equal
`F_(1)d_(1)=F_(2)d_(2)`
`therefore d_(2)=((F_(1))/(F_(2)))d_(1)`
`d_(2)=40xx(140)/(40)=140cm`
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