a mechanic applies the force of 50 N at a distance of 40 cm from the pivot on a wheel wrench . what is the size of the moment ?

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To find the moment applied by the mechanic, you need to multiply the force (in newtons) by the distance from the pivot point (in meters). In this case, the force is 50 N and the distance is 40 cm.

First, convert the distance from centimeters to meters by dividing by 100:
40 cm / 100 = 0.4 m

Now, you can calculate the moment:
Moment = Force × Distance
Moment = 50 N × 0.4 m
Moment = 20 N·m

So, the size of the moment applied by the mechanic is 20 N·m.