A man opens a nut by applying a force of 150 N by using a lever handle of length `0*4m`. What should be the length of the handle if he wants to open it by applying a force of 60 N?

Explanation

Given, `F_(1)=150N`
`l_(1)=0.4m`
`F_(2)=60N`
`l_(2)=?`
`because` Force `xx` Perpendicular distance = Constant
`F_(1)xxl_(1)=F_(2)xxl_(2)`
or `150xx0.4=60xxl_(2)`
`thereforel_(2)=1m`