A machinist is using a wrench to loosen a nut. The wrench is 25.0 c m long, and

Question

A machinist is using a wrench to loosen a nut. The wrench is 25.0 cm long, and he exerts a 17.0-N force at the end of the handle at 37 ? with the handle (the figure(Figure 1) ).

http://session.masteringphysics.com/problemAsset/1260480/2/YF-10-41.jpg

A.What is the magnitude of the torque does the machinist exert about the center of the nut?

B.What is the direction of the torque in part (A).

C.What is the maximum torque he could exert with this force?

D.ow should the force mentioned in part (C) be oriented ?

The force is directed into the page. The force is directed out of the page. The force is perpendicular to the wrench. The force is parallel to the wrench.

Explanation / Answer

1) Torque = force . perpendicular distance = 17 . 0.25 . sin 37? = 2.56 Nm

2) Anticlockwise direction

3) Max torque would be 17 . 0.25 = 4.25 Nm

4) The force should be perpendicular to the wrench.

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