A beam of metal supported at the two ends is loaded at the centre. The depression at the centre is proportional to
${Y^2}$
$Y$
$1/Y$
$1/{Y^2}$
Explain with illustration cranes regarding the applications of elastic behaviour of materials.
In suspended type moving coil galvanometer, quartz suspension is used because
Figure shows graph between stress and strain for a uniform wire at two different femperatures. Then
The mass and length of a wire are $M$ and $L$ respectively. The density of the material of the wire is $d$. On applying the force $F$ on the wire, the increase in length is $l$, then the Young's modulus of the material of the wire will be
A bar is subjected to axial forces as shown. If $E$ is the modulus of elasticity of the bar and $A$ is its crosssection area. Its elongation will be