Circular Motion (id: 6a0618307)

本题目来源于试卷: Circular Motion，类别为 美国物理杯赛(Physics Bowl)

[单选题]
15.40: A 2.0 kg mass is connectnq/ ,;x1k4-ij +yzv(eawzwhr nd 7/uplrk, r t0ci9wg4sg (qriy ))3wed to the end of string and moves about the string’s fixed end in a conical motion with a constant speed of 4.0 m/s. r(yq klwd7i 3g)r,tsp )4nuwi 0r9g/cThe string has a length of 2.50 m and forms an angle of $θ$ with the vertical. What is the tension in the string?

A. 20.0 N
B. 23.7 N
C. 27.4 N
D. 29.8 N
E. 32.5 N


参考答案:  C


本题详细解析: 暂无

微信扫一扫，分享更方便