Questions in Mechanical Properties of Solids

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If the tension on a wire is removed at once, then
When strain is produced in a body within elastic limit, its internal energy
When shearing force is applied on a body, then the elastic potential energy is stored in it. On removing the force, this energy
A brass rod of cross-sectional area $1\,c{{m}^{2}}$ and length $0.2 m$ is compressed lengthwise by a weight of 5 kg. If Young's modulus of elasticity of brass is $1\times {{10}^{11}}\,N/{{m}^{2}}$ and $g=10\,m/{{\sec }^{2}}$, then increase in the energy of the rod will be
If one end of a wire is fixed with a rigid support and the other end is stretched by a force of 10 N, then the increase in length is 0.5 mm. The ratio of the energy of the wire and the work done in displacing it through 1.5 mm by the weight is
A wire is suspended by one end. At the other end a weight equivalent to 20 N force is applied. If the increase in length is 1.0 mm, the increase in energy of the wire will be
In the above question, the ratio of the increase in energy of the wire to the decrease in gravitational potential energy when load moves downwards by 1 mm, will be
The Young's modulus of a wire is $Y$. If the energy per unit volume is $E$, then the strain will be
The ratio of Young's modulus of the material of two wires is 2 : 3. If the same stress is applied on both, then the ratio of elastic energy per unit volume will be
The length of a rod is $20 cm$ and area of cross-section $2\,c{{m}^{2}}$. The Young's modulus of the material of wire is $1.4\times {{10}^{11}}\,N/{{m}^{2}}$. If the rod is compressed by 5 kg-wt along its length, then increase in the energy of the rod in joules will be

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