Question

(Double points) A mechanic used a wrench 0.6 meters long to loosen rusted lug nuts on a truck wheel. By standing on the end of the wrench, he was able to apply his entire 100 kg weight to the wrench. How much torque did he apply?

Answer 1

Answer:

Torque, $\tau=588\ N-m$

Explanation:

It is given that,

Length of the wrench, l = 0.6 m

Mass of the wrench, m = 100 kg

We know that the torque applied by mechanic is given by :

$\tau=Fl$

$\tau=mgl$

$\tau=100\times 9.8\times 0.6$

$\tau=588\ N-m$

So, the torque applied by the mechanic is 588 N-m. Hence, this is the required solution.