Question

mechanic tightens a nut by applying a force of 10 N on a spanner with a handle of 1.2 m. How long should the handle be if he wants to tighten the nut by applying a force of 15 N?​

Answer 1

Dear friend, Here is your answer

Moment of force = F x R = 10 x 1.2 = 12 Nm

If Force is 15N,

12 = 15 x R

R = 12/15

Therefore, R = 0.8 m, the handle must be 0.8 m long if the mechanic wants to tighten the nut by applying a force of 15 N

Hope this helps you

Best of luck.....