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Mechanical Properties of Solids

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Physics Part II

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Physics

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12
Derive an expression for the increase in the length of a uniform rope hanging from the ceiling of a room, due to its own weight.

Let,

Mass of the wire = M

Area of cross section = A

Length of the rope = L 

Let, be the increase in the length of rope due to its own weight.

Since the rope is uniform and whole of the weight of rope can supposed to be concentrated at the centre of gravity, therefore the effective length of the rope is L/2 loaded by weight Mg.

Thus, Young's modulus is given by, 

Error converting from MathML to accessible text.   
236 Views

What is the force of adhesion?

Adhesive force is the attractive force between two unlike molecules. They are caused by forces acting between two substances like electrostatic force (attraction due to opposing charges), mechanical force etc. 

E.g., Force of attraction between gum and paper.

587 Views

What do you understand by intermolecular forces?

Intermolecular force is the force between the molecules of the substance is called intermolecular force.

There is a dipole-dipole interaction between the molecules.
630 Views

What is the force of cohesion?

Cohesive attraction or cohesive force is the force of attraction between same types of molecules sticking together. 
651 Views

Define interatomic forces and give an example?

The force between atoms of the molecule is called interatomic force.

E.g.The nucleus and electron cloud of a molecule is binded by electrostatic force. 
1032 Views

What is the nature of inter-atomic or inter-molecular forces?

Inter-atomic or inter-molecular forces are electrostatic in nature. 

637 Views

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