A mechanic unscrews a nut by applying a force of 120 N on a spanner of length 40 cm. What should be the required length of the spanner in order to apply only 40 N force ?

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 ?

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?

A mechanic can open a nut by applying a force of 150N while using a lever handle of length 40cm. How long a handle is required if he wants to open it by applying a force of only 50 N?

Possible to double the length of metallic wire by apply in a force over it ?

To produce a couple of 20 N m on a disc of radius 10 cm, what is the force to be applied.

Is it possible to double the length of a metallic wire by applying force over it ?