A horizontal heavy uniform bar of weight W is supported at its ends by two men. At the instant, one of the men lets go off his end of the rod, the other feels the force on his hand changed to
A
W
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
D
Let the mass of the rod is M ∴ ∴ Weight ( W ) = Mg
Initially for the equilibrium 
⇒ ⇒ 
When one man withdraws, the torque on the rod
⇒ ⇒ 
[As I = Ml 2 / 3]
⇒ ⇒ Angular acceleration 
and linear acceleration 
Now if the new normal force at A is 
then 
⇒ ⇒ 
.
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