A uniform rod hinged at its one end is allowed to rotate in vertical plane. Rod is given an angular velocity ω in its vertical position as shown in figure. The value of ω for which the force exerted by the hinge on rod is zero in this position is :
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
For the circular motion of com :
mg = m 
ω 2 ⇒ ω = 
Note : Since the reaction at the end is zero, the gravitational force will have to provide the required centripetal force.
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