Physics Mechanical Properties of Solids

Which element is known to have the highest elastic moduli?

A uniform rod, of mass $m$ , length $l$ and $r$ radius of cross section, is rotated about an axis passing through one of its ends and perpendicular to its length with constant angular velocity $\omega$ in horizontal plane. If $Y$  is the Young's modulus of the material of rod, the increase in its length due to rotation of rod is

A vertical cylindrical vessel contains a half litre of water having column height of $60cm$ . If the density and bulk modulus of water are ${10}^{3}kg{m}^{–3}$ and $2*{10}^{9}N{m}^{–2}$  respectively, then the elastic deformation potential energy (approximately) of water, is

If y, K and $\eta$  are the value of Young's modulus, bulk modulus of rigidity of any material respectively. Choose

If y, K and $\eta$  are the value of Young's modulus, bulk modulus of rigidity of any material respectively. Choose

A uniform rod, of mass m, length l and r radius of cross section, is rotated about an axis passing through one of its ends and perpendicular to its length with constant angular velocity ω in horizontal plane. If Y is the Young's modulus of the material of rod, the increase in its length due to rotation of rod is

Let a wire be suspended from the ceiling (rigid support) and stretched by a weight W attached at its free end. The longitudinal stress at any point of cross-sectional area A of the wire is:

A Wheatstone bridge is used to determine the value of unknown resistance X by adjusting the variable resistance Y as shown in the figure. For the most precise measurement of X, the resistance P and Q

Let a wire be suspended from the ceiling (rigid support) and stretched by a weight $\mathrm{W}$  attached at its free end. The longitudinal stress at any point of cross-sectional area A of the wire is:

Two separate wires A and B are stretched by 2 mm and 4 mm respectively, when they are subjected to a force of 2 N. Assume that both the wires are made up of same material and the radius of wire B is 4 times that of the radius of wire A. The length of the wires A and B are in the ratio of a : b. Then a/b can be expressed as 1/x where x is---------.