A wire of cross-sectional area A, modulus of elasticity
and length 2 m is stretched between two vertical rigid supports. When a mass of 2 kg is suspended at the middle it sags lower from its original position making angle
radian on the points of support. The value of A is ______
(consider
). (given:
)

Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(1)

In vertical direction

using small angle approximation 

Change in length 


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