Question

The instaneous velocity of point B of the given rod of length 0.5 is 3m/s in the represented direction. The angualr velocity of the rod for minimum velocity of end A is

A. 1.5 rad/s
B. 5.2 rad/s
C. 2.5 rad/s
D. 3.6 rad/s

Answer 1

b) if rod is rotated about end A, then vertical component of velocity, `v_(bot)` of end A will be zero.
`therefore` `omega = (vsin60^(@))`/l` =`(sqrt(3)v)/(2l) = (sqrt(3) xx 3)/(2 xx 0.5) = 5.2 rad/s`