作者barkcmos (barkcmos)
看板Physics
标题[问题] 铅直圆周运动
时间Sun Sep 23 15:11:10 2012
A stunt motorcyclist rides with uniform speed on the inside rim of a vertical
circular ramp of radius 8m. How fast must the motorcyclist travel to avoid
leaving the surface at the top of the loop?
总觉得此题关键在uniform speed
我原本是想答案应该是(gR)^(0.5)
R是半径8m,g是重力加速度9.8
但是答案不对
答案是11 m/s
有大大可以帮忙解答吗?
感谢!!!
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 120.107.174.101
1F：推 JAPTX4869:怎麽算的? 09/23 15:52