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PQ is a vertical rod of length 2L, mass ...

PQ is a vertical rod of length 2L, mass M, area of cross -section 'a' and Young's modulus Y. It is connected to block A by a massless string passing over a frictionless pulley. Block A is being pulled downwards by applying a constant force of 2Mg. What is the stress at the mid-point of the rod ?

A

Mg

B

`2Mg//a`

C

`(Mg)/(a)`

D

`(Mg)/(2a)`

Text Solution

Verified by Experts

The correct Answer is:
C
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