本题目来源于试卷: Physics Unit8: Rotational Motion，类别为 通用国际物理
[单选题]
Two equal forces are applied to a door. The f(j-. j9a(p5 g mwho+xmk1j iotirst force is applied at tfqa51hzaq p (3he midpoint of the door; the second force is applied at the doorknob. Both forh(f 1q5z3 aqpaces are applied perpendicular to the door. Which force exerts the greater torque?
A. the first at the midpoint
B. the second at the doorknob
C. both exert equal non-zero torques
D. both exert zero torques
参考答案: B
本题详细解析:
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