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 a4wzna qhs .w da8l yb+i)b/3i( e*amwiw),gh g1: u0)rwp zc)w door at the doorknob. The first force is applied perpendicular to the door; the second force is applied at 30e to the planeg1*apw,))w mc0wi r)h:uezw g of the door. Which force exerts the greater torque?
A. the first applied perpendicular to the door
B. the second applied at an angle
C. both exert equal non-zero torques
D. both exert zero torques
参考答案: A
本题详细解析:
暂无
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