本题目来源于试卷: Physics Unit8: Rotational Motion，类别为 Generic Physics
[单选题]
Two equal forces are applav*z1gvh won1m:8dq ; ied to)ya(s. nze t2q/ xrsm5 a door at the doorknob. The first force is applied perpendicular to the .y(2mzx5/s seaqrtn) door; the second force is 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
| 
Post time 2024-1-22 02:51:16