Home
Class 12
PHYSICS
A block of weight 100 N is suspended by ...

A block of weight 100 N is suspended by copper and steel wires of same cross sectional area `0.5 cm^(2)` and, length `sqrt(3)` m and 1m, respectively. Their other ends are fixed on a ceiling as shown in figure. The angles subtended by copper and steel wires with ceiling are `30^(@) and 60^(@)`, respectively. If elongation in copper wire is `(Delta l_(C))` and elongation in steel wire is `(Delta l_(s))`, then the ratio `(Delta l_(C))/(Delta l_(s))` is -

[Young's modulus for copper and steel are `1 xx 10^(11) N//m^(2) and 2 xx 10^(11) N//m^(2)`, respectively]

Text Solution

Verified by Experts

2
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY AND THERMAL EXPANSION

    MOTION|Exercise Exercise - 4 (Level-I)|16 Videos

  • ELASTICITY

    MOTION|Exercise EXERCISE -3|60 Videos

  • Electrical Instrument

    MOTION|Exercise EXERCISE -3|16 Videos

Similar Questions

Explore conceptually related problems

A weight of 100N is suspended by two wires made by steel and copper as shown in figure length of steel wire is 1m and copper wire is sqrt(3)m . Find ratio of change in length of copper wire (Deltal_(c)) to change in length of steel wire (Deltal_(s)) . given Young's modulus Y_("Steel") =2xx10^(11) N//m^(2),Y_("Copper")=1xx10^(11) N//m^(2)

In the above question the ratio of the elongation produced in the copper wire and steel wire are

A copper wire of length 1.0 m and a steel wire of length 0.5 m having equal cross-sectional areas are joined end to end. The composite wire is stretched by a certain load which stretches the copper wire by 1 mm. If the Young’s modulii of copper and steel are respectively 1.0xx10^(11)Nm^(-2)"and"2.0xx10^(11)Nm^(-2), the total extension of the composite wire is:

Two wires of equal cross-section but one made of steel and the other of copper are joined end to end. When the cobination is kept under tension, the elongations in the two wires are found to be equal elongations in the two wire are found to be equal. What is the ratio of the lengths of the two wires? (Given, Young's modulus of steel = 2 xx 10^(11) Nm^(-2) and young's modulus of copper = 1.1 xx 10^(11) Nm^(-2) )

Young's modulus of brass and steel are 10 xx 10^(10) N//m and 2 xx 10^(11) N//m^(2) , respectively. A brass wire and a steel wire of the same length are extended by 1 mm under the same force. The radii of the brass and steel wires are R_(B) and R_(S) . respectively. Then

Steel and copper wires of same length are stretched by the same weight one after the other. Young's modulus of steel and copper are 2xx10^(11)(N)/(m^2) and 1.2xx10^(11)(N)/(m^2) . The ratio of increase in length is

Three copper wires of length and cross-sectional areas are (L,A) (2L,(A)/(2)),(L//2,2A) , resistance is