Question

The cylinder head bolts on a car are to be tightened with a torque of 62.0 N·m. If a mechanic uses a wrench of length 20 cm, what perpendicular force must he exert on the end of the wrench to tighten a bolt correctly?

a) 310 N
b) 155 N
c) 124 N
d) 77.5 N

Answer 1

To tighten a bolt correctly, a mechanic must exert a perpendicular force of 310 N on the end of a 20 cm wrench.

Step-by-step explanation:

To find the perpendicular force that must be exerted on the end of a 20 cm wrench to tighten a bolt correctly, we can use the formula: torque = force x distance. Rearranging the formula, we have: force = torque / distance.

Given that the torque is 62.0 N·m and the distance is 20 cm (or 0.2 m), we can calculate the force: force = 62.0 N·m / 0.2 m = 310 N.

Therefore, the perpendicular force that the mechanic must exert on the end of the wrench is 310 N.