the velocities at both ends should be same in order to move the rod so the cosine of 3 ie 3cos60 is the velocity at upper portion (min)
a rod of length l is resting on a horizontal floor.at a certain instant of time,lower end has a velocity of 3m/s
what is the minimum velocity of of the upper end of the rod?

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4 Answers
thakurshubham joshi
·20111027 04:52:26
rishabh
·20111027 05:46:22
@vijay,
velocity of all the points of the rod along the length of the rod is same since it is a rigid rod and can neither contract or expand.
Aditya Bhutra
·20111004 02:06:07
vel. of lower end along the length of the rod is 3.cos60 . since the rod is rigid, min. vel of upper end will be 1.5 m/s