本题目来源于试卷: 美国2021年物理杯赛真题 PHYSICS BOWL 2021，类别为 美国物理杯赛(Physics Bowl)
[单选题]
An amusement park ride called “The Rotor”has people standing in a vertical cylinder,in this case 6 m in diameter, which rotatesand presses them against the wall withsufficient force that the floor can then dropwithout them sliding down the wall.Shown here is the magnitude ofaccelerometer data from a device carried ina pocket by a rider. Assuming the highplateau averages $27.7 \frac{m}{s^2}$, what is thepeak centripetal acceleration? (Considerthe spikes noise caused by movement ofthe rider.)
A. 0
B. $10 m/s^2$
C. $20 m/s^2$
D. $26 m/s^2$
E. $28 m/s^2$
参考答案: D
本题详细解析:
4a^2+b^2=c^2$ ;$a_c=\sqrt{(27.7\frac{m}{s^2})^2 -(10\frac{m}{s^2})^2}
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