## Chapter Chosen

Mechanical Properties of Solids

## Book Store

Currently only available for.
CBSE Gujarat Board Haryana Board

## Previous Year Papers

Download the PDF Question Papers Free for off line practice and view the Solutions online.
Currently only available for.
Class 10 Class 12

Two wires of diameter 0.25 cm, one made of steel and the other made of brass are loaded as shown in Fig. 9.13. The unloaded length of steel wire is 1.5 m and that of brass wire is 1.0 m. Compute the elongations of the steel and the brass wires.

Given,
Diameter of the wires = 0.25 cm
That is, d= d= 0.25 cm

Therefore,
Radius of the wires will be given by,

Unloaded length of the steel wire, Ls=1.5 m
Unloaded length of the brass wire, L= 1 m

Young's modulus of steel, Ys = 2  Pa
Young's modulus of brass, YB
m1 = 4 kg and m2 = 6 kg

Brass wire is under a tension of load 6 kg.

Therefore, increase in length is given by

Since, brass wire is under a tension of load 6 kg.

"
Steel wire is under a tension of 10 kg load.

Therefore, elongation of length of the wire,

262 Views

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

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

637 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 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 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 is the force of cohesion?

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