Question

A mechanic changing the spark plugs in a car notes that the instruction manual calls for a torque with a magnitude of
39 N · m.

If the mechanic grasps the wrench as shown in the figure below, determine the magnitude (in N) of the force she must exert on the wrench.

______N

Answer 1

The magnitude (in N) of the force she must exert on the wrench is 150.1 N.

Force exerted by the wrench

The force exerted by the wrench is calculated using torque formula as follows;

torque, τ = F x r x sinθ

where;

• F is the applied force
• r is the perpendicular distance if force applied

F =  τ /(r sinθ)

F = (39) / (0.3 sin 60)

F = 150.1 N

Thus, the magnitude (in N) of the force she must exert on the wrench is 150.1 N.

Learn more about torque here: https://brainly.com/question/14839816

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