Home
Class 12
PHYSICS
A bar of mass m and length l is hanging ...

A bar of mass m and length l is hanging from point A as shown in the figure . If the Young's modulus of elasticity of the bar is Y and area of cross - section of the wire is A, then the increase in its length due to its own weight will be

A

`(mgL)/(2AY)`

B

`(mgA)/(2LY)`

C

`(mg)/(2LAY)`

D

`(2LY)/(mgA)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

A bar of mass m and length l is hanging from point A as shown in figure.Find the increase in its length due to its own weight. The young's modulus of elasicity of the wire is Y and area of cross-section of the wire is A.

A bar of mass m and length l is hanging from point A as shown in figure.Find the increase in its length due to its own weight. The young,s modulus of elasicity of the wire is Y and area of cross-section of the wire is A.

A bar is subjected to axial forces as shown. is the modulus of elasticity of the bar is E and A is it cross-section area. Its elongation will be

If a force is applicable to an elastic wire of the material of Poisson's ratio 0.2 there is a decrease of the cross-sectional area by 1 % . The percentage increase in its length is :

A wire of cross-sectional area A breaks due to its own weight when length of the wire is l. If area of cross-section of the wire is made 3A then maximum length of the wire can be hung without breaking is

The length of an iron wire is L and area of cross-section is A. The increase in length is l on applying the force F on its two ends. Which of the statement is correct

In a wire of length L, the increase in its length is l . If the length is reduced to half, the increase in its length will be

A wire of natural length l , young's modulus Y and area of cross-section A is extended by x . Then, the energy stored in the wire is given by

The Young's modulus of a wire of length L and radius r is Y newton/ m^(2) . If the length of the wire is dooubled and the radius is reduced to (r )/(2) , its Young's modulus will be

One end of a wire of length L and weight w is attached rigidly to a point in roof and a weight w_(1) is suspended from its lower end. If A is the area of cross-section of the wire then the stress in the wire at a height (3L)/(4) from its lower end is