本题目来源于试卷: Physics Unit8: Rotational Motion，类别为 国际高中通用物理
[单选题]
Two equal forces are applied to a doov e; kt 3o.9t5gn.dqntdk-;ia r. The firstpgm0h hj3 xx/1 t2y*jo force is applied at the midpoint of the door; the second force is applied at the doorknob. Both forces are appj/0txj hp*xm y 32og1hlied 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:
暂无
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