AP Physics 1 Question 234: Answer and Explanation
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4. In an effort to tighten a bolt, a force F is applied as shown in the figure above. If the distance from the end of the wrench to the center of the bolt is 20 cm and F = 20 N, what is the magnitude of the torque produced by F ?
- A. 1 N·m
- B. 2 N·m
- C. 4 N·m
- D. 10 N·m
Correct Answer: C
The torque is τ = rF = (0.20 m)(20 N) = 4 N · m.