本题目来源于试卷: Physics Unit8: Rotational Motion，类别为 Generic Physics
[单选题]
Two equal forces are applied to a door. The first gidhlwxe 9g z0:v2(46 kdx q(oforce is applied at thfn4 j )4fuwqn+e midpoint of the door; the second force is applied at the doorknob. Both forces are applied perpendicular to the door. Which forceff+n4 )wjnq u4 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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Post time 2024-1-22 02:51:16