Physics Unit8: Rotational Motion (id: 6fdd9b073)

[单选题]
Two equal forces are applied to a door atck,. - iao1k2wwv)v ue the doorknob. The first force bded0,5 )w hq7l rbl5dis applied perpendicular to the door; the second force ,5b5 lb)de 70drlqdhwis applied at $30^{\circ}$ to the plane 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