Tag: properties of matter
Questions Related to properties of matter
A metal wire of length L, area of cross-section A and Young modulus Y behaves as a spring of spring constant
A steel rod of length $1m$ and radius $10mm$ is stretched by a force $100kN$ along its length. The stress produced in the rod is then
$\left( { Y } _{ steel }=2\times { 10 }^{ 11 }N\quad { m }^{ -2 } \right) $
One end of a uniform wire of length L and of weight W is attached rigidly to a point in the roof and
a weight $W _{1}$ is suspended from its lower end. If S is the are of cross-section of the wire, the stress in
the wire at a height (3 L /4) from its lower end is :
The elastic energy stored per unit volume in a stretched wire is
If S is stress and Y is Young's modulus of the material of a wire, the energy stored in the wire per unit volume is:
One end of an aluminium wire whose diameter is 2.5 mm is welded to one end of a copper diameter is 1.8 mm. The composite wire carries a steady current i of I .3 A. What is the current density in each wire ?
Two wires are of same material. Wire 1 is of 4 times longer than wire 2 and area of wire 1 is 4 times less than wire 2. Compare the stresses if they are elongated by the same load
Two wires of different material but of same radius and length are stretched by the same load, the ratio of the stresses in the material will be same
Two wires of different material but of same radius and different length are stretched by the loads in the ratio 1:3, the ratio of the stresses in the material will be same
The total strain energy stored in a body is known as