Use the exact values you enter to make later calculations. (a) Suppose you have

Question

Use the exact values you enter to make later calculations.

(a) Suppose you have just barely loosened a rusty bolt. Your mass is 74 kg and you have a wrench of length L = 49 cm placed as shown in the diagram below, and hung off the end so all your weight was applied, in the downward direction, to the end of the wrench. What is the magnitude and direction of the torque?

(b) Now suppose you had a bolt that needed to be tightened to 250 N

magnitude    

direction     ---Select---clockwisecounterclockwise Use the exact values you enter to make later calculations. Suppose you have just barely loosened a rusty bolt. Your mass is 74 kg and you have a wrench of length L = 49 cm placed as shown in the diagram below, and hung off the end so all your weight was applied, in the downward direction, to the end of the wrench. What is the magnitude and direction of the torque?

Explanation / Answer

(a) torque = F*L = 74*g * 0.49 = 355.348

counter clockwise

(b) 250 = F*L = 74*g*L

implies L = 0.3447 meters = 34.47 cms

(c) torque = Fsin(theta) * L = 74*g*sin(66deg) * 0.49 = 324.6266

clockwise

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