A small, 300-g collar D can slide on portion AB of a rod which is bent as shown. Knowing that a = 40° and that the rod rotates about the vertical AC at a constant rate of 5 rad/s, determine the value...

A small, 300-g collar D can slide on portion AB of a rod which is bent as shown. Knowing that a = 40° and that the rod rotates about the vertical AC at a constant rate of 5 rad/s, determine the value of r for which the collar will not slide on the rod if the effect of friction between the rod and the collar is neglected.

A small, 200-g collar D can slide on portion AB of a rod which is bent as shown. Knowing that the rod rotates about the vertical AC at a constant rate and that a = 30° and r = 600 mm, determine the range of values of the speed v for which the collar will not slide on the rod if the coefficient of static friction between the rod and the collar is 0.30.