A long horizontal rod has a bead which can slide along its length, and initially placed at a distance L from one end A of the rod. The rod is set in angular motion about A with constant angular acceleration a . If the coefficient of friction between the rod and the bead is m μ , and gravity is neglected, then the time after which the bead starts slipping is
A
B
C
D
Infinitesimal
Text Solution
Verified by ExpertsThe correct answer is:
A
Let the bead starts slipping after time t
For critical condition
Frictional force provides the centripetal force
⇒ ⇒ 
⇒ ⇒ 
(As 
)
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