本题目来源于试卷: Circular Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
13.23: A small object of mass 11.0g is at rest 3.+ q-csrmdo eo284rxiq ns 0;w0.0 cm from a horizontalc4dz7uh;wr37t6 dv 9o hp uax/ disk’s center. The disk starts tzu 39xdo6r ; 4h7pvwtdhc7/auo rotate from rest about its center with a constant angular acceleration of $4.50 rad/s^{2}$ . What is the magnitude of the net force acting on the object after a time of t=1/3 s if the object remains at rest with respect to the disk?
A. $0N$
B. $7.43× 10^{−3}N$
C. $1.49× 10^{−2}N$
D. $1.66× 10^{−2}N$
E. $2.23× 10^{−2}N$
参考答案: D
本题详细解析:
暂无
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