369844 Two metal wires \(P\) and \(Q\) of same length and material are stretched by same load. Their masses are in the ratio \(m_{1}: m_{2}\). The ratio of elongations of wire \(P\) to that of \(Q\) is

369845 A rigid bar of mass \(15\;kg\) is supported symmetrically by three wires each \(2\;m\) long. These at each end are of copper and middle one is of iron. Determine the ratio of their diameters if each is to have the same tension. Young's modulus of elasticity for copper and steel are \(110 \times {10^9}\;N/{m^2}\) and \(190 \times {10^9}\;N/{m^2}\) respectively.

369846 Two wires \(A\) and \(B\) are of same materials. Their length are in the ratio \(3: 4\) and diameters are in the ratio \(5: 1\) when stretched by force \(F_{A}\) and \(F_{B}\) respectively they get equal in increase in their lengths. The ratio of \(F_{B} / F_{B}\) is.

369847 A uniform cylindrical wire is subjected to a longitudinal tensile stress of \(5 \times 10^{7} \mathrm{Nm}^{-2}\). The Young's modulus of the material of the wire is \(2 \times 10^{11} \mathrm{Nm}^{-2}\). The volume change in the wire is \(0.02 \%\). The fractional change in the radius is

369844 Two metal wires \(P\) and \(Q\) of same length and material are stretched by same load. Their masses are in the ratio \(m_{1}: m_{2}\). The ratio of elongations of wire \(P\) to that of \(Q\) is

369845 A rigid bar of mass \(15\;kg\) is supported symmetrically by three wires each \(2\;m\) long. These at each end are of copper and middle one is of iron. Determine the ratio of their diameters if each is to have the same tension. Young's modulus of elasticity for copper and steel are \(110 \times {10^9}\;N/{m^2}\) and \(190 \times {10^9}\;N/{m^2}\) respectively.

369846 Two wires \(A\) and \(B\) are of same materials. Their length are in the ratio \(3: 4\) and diameters are in the ratio \(5: 1\) when stretched by force \(F_{A}\) and \(F_{B}\) respectively they get equal in increase in their lengths. The ratio of \(F_{B} / F_{B}\) is.

369847 A uniform cylindrical wire is subjected to a longitudinal tensile stress of \(5 \times 10^{7} \mathrm{Nm}^{-2}\). The Young's modulus of the material of the wire is \(2 \times 10^{11} \mathrm{Nm}^{-2}\). The volume change in the wire is \(0.02 \%\). The fractional change in the radius is

369844 Two metal wires \(P\) and \(Q\) of same length and material are stretched by same load. Their masses are in the ratio \(m_{1}: m_{2}\). The ratio of elongations of wire \(P\) to that of \(Q\) is

369845 A rigid bar of mass \(15\;kg\) is supported symmetrically by three wires each \(2\;m\) long. These at each end are of copper and middle one is of iron. Determine the ratio of their diameters if each is to have the same tension. Young's modulus of elasticity for copper and steel are \(110 \times {10^9}\;N/{m^2}\) and \(190 \times {10^9}\;N/{m^2}\) respectively.

369846 Two wires \(A\) and \(B\) are of same materials. Their length are in the ratio \(3: 4\) and diameters are in the ratio \(5: 1\) when stretched by force \(F_{A}\) and \(F_{B}\) respectively they get equal in increase in their lengths. The ratio of \(F_{B} / F_{B}\) is.

369847 A uniform cylindrical wire is subjected to a longitudinal tensile stress of \(5 \times 10^{7} \mathrm{Nm}^{-2}\). The Young's modulus of the material of the wire is \(2 \times 10^{11} \mathrm{Nm}^{-2}\). The volume change in the wire is \(0.02 \%\). The fractional change in the radius is

369844 Two metal wires \(P\) and \(Q\) of same length and material are stretched by same load. Their masses are in the ratio \(m_{1}: m_{2}\). The ratio of elongations of wire \(P\) to that of \(Q\) is

369845 A rigid bar of mass \(15\;kg\) is supported symmetrically by three wires each \(2\;m\) long. These at each end are of copper and middle one is of iron. Determine the ratio of their diameters if each is to have the same tension. Young's modulus of elasticity for copper and steel are \(110 \times {10^9}\;N/{m^2}\) and \(190 \times {10^9}\;N/{m^2}\) respectively.

369846 Two wires \(A\) and \(B\) are of same materials. Their length are in the ratio \(3: 4\) and diameters are in the ratio \(5: 1\) when stretched by force \(F_{A}\) and \(F_{B}\) respectively they get equal in increase in their lengths. The ratio of \(F_{B} / F_{B}\) is.

369847 A uniform cylindrical wire is subjected to a longitudinal tensile stress of \(5 \times 10^{7} \mathrm{Nm}^{-2}\). The Young's modulus of the material of the wire is \(2 \times 10^{11} \mathrm{Nm}^{-2}\). The volume change in the wire is \(0.02 \%\). The fractional change in the radius is