Two wires each of radius 0.2 cm and negligible mass, one made of steel and the other made of brass are loaded as shown in the figure. The elongation…

Question

Two wires each of radius 0.2 cm and negligible mass, one made of steel and the other made of brass are loaded as shown in the figure. The elongation of the steel wire is ______10^(–6) m. [Young's modulus for steel =2×10^11 N m^(–2) and g=10 m s^(–2)]

MARKS Content Team · Accepted Answer

Correct answer: 20. The force acting on steel wire F is 2+1.14 g=3.14g From the relation of Young's modulus, it can be written F/A=Y(ΔL)/L ⇒ΔL=FL/AY=(3.14×g×1.6)/(π×0.2^2×2×10^11×10^(-4)) ⇒∆L=2×10^(-5) ⇒∆L=20×10^(-6) m

Two wires each of radius $0.2 cm$ and negligible mass, one made of steel and the other made of brass are loaded as shown in the figure. The elongation of the steel wire is ______ $10^{- 6} m$ . [Young's modulus for steel $= 2 \times 10^{11} N m^{- 2}$ and $g = 10 m s^{- 2}$ ]

Solution

Relevant Questions

Two wires each of radius 0.2 cm and negligible mass, one made of steel and the other made of brass are loaded as shown in the figure. The elongation of the steel wire is ______10–6 m. [Young's modulus for steel =2×1011 N m–2 and g=10 m s–2]

Solution

Relevant Questions

Two wires each of radius $0.2 cm$ and negligible mass, one made of steel and the other made of brass are loaded as shown in the figure. The elongation of the steel wire is ______ $10^{- 6} m$ . [Young's modulus for steel $= 2 \times 10^{11} N m^{- 2}$ and $g = 10 m s^{- 2}$ ]