作者papapapapapa (啪啪啪啪啪啪)
看板Physics
标题[问题] 一题动力学
时间Tue Oct 12 18:18:58 2010
Fig.
http://ppt.cc/ZdLm
Please refer to Fig. A disk of radius r is suspended from a vertical
spring with spring constant , and it can roll without slipping in the
vertical direction. A ball of mass m is constrained to slide along a beam
that is connected to the boundary of the disk. Please use complex notations
to find the position, velocity, and acceleration of the ball in terms of
generalized coordinates.
Hint: (i) The system is 3-DOF and hence only three generalized coordinates
are needed; (ii) You should first define a fixed coordinate system; (iii) Let
y (see Fig. 1) be the displacement of the disk.
看题目不太知道该怎麽下手 拜托各位给点提示
大概要怎麽列式 甚谢 <(_ _)>
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