A mechanic is working on an engine and needs to tighten a bolt onto the engine b

Question

A mechanic is working on an engine and needs to tighten a bolt onto the engine block by using a wrench. Assume a typical threading (righty tighty, lefty loosey). a. Identify the lever arm in this scenario b. How should the mechanic apply his/her force in order to maximize torque That is, at what angle to the lever arm will his/her force provide the mos torque? c. In what direction is the torque applied? Use Cartesian xyz coordinates, in which the bolt is in the x-y plane and positive z is the direction toward space. d. What is the unit of torque?

Explanation / Answer

(a) Wrench is lever arm

(b) Angle should be 90 degree with the lever arm

(c) Is should be along Z-axis.if force and lever arm both are in x-y plane

(d) Newton-meter (N-m)

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