Question

A mechanic unscrew 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
unscrew the same nut?​

Answer 1

Answer:

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 ? Torque (τ)=120N×40100=48Nm. In the 2nd case, applied force F = 40 N and the length of the radius vector is to be found.

Explanation:

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