Home
Class 11
PHYSICS
The graph shows the extension (Delta l) ...

The graph shows the extension `(Delta l)` of a wire of length 1m suspended from the top of a roof at one end with a load W connected to other end if the cross sectional area of wire is `10^(-6)m^(2)`, calculate the young's modulus of the material of the wire.

Text Solution

Verified by Experts

When `W = 20 N, Delta l = 1 xx 10^(-4)m, A = 10 - 6`

`:. y = (F)/(A).(l)/(Delta l) = (W)/(A).(l)Delta l = (20)/(10^(-6)) xx (1)/(1 xx 10^(-4))`
`= 2 xx 10^(11) Nm^(-2)`
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF MATTER

    SURA PUBLICATION|Exercise Value based Questions|5 Videos

  • PROPERTIES OF MATTER

    SURA PUBLICATION|Exercise Numerical Problems|13 Videos

  • OSCILLATIONS

    SURA PUBLICATION|Exercise VALUE BASED QUESTIONS|2 Videos

  • PUBLIC EXAM QUESTION PAPER MARCH-2019

    SURA PUBLICATION|Exercise Part-IV|10 Videos

Similar Questions

Explore conceptually related problems

If the specific resistance of a potentiometer wire is 10^(-7)Omega m and current flowing through it is 0.1 amp, cross-sectional aea of wire is 10^(-6) m^(2) , then potential gradient will be

A wire of area of cross section 3.0mm^2 and natural length 50 cm is fixed at one end and a mas of 2.1 kg is hung from the other end. Find the elastic potential energy stored in the wire in steady state. Young modulus of the material of the wire =1.9xx10^11Nm^-2. Take g=10ms^-2

One end of a metal wire is fixed to a ceiling and a load of 2 kg hangs from the other end. A similar wire is attached to the bottom of the load and another load of 1 kg hangs from this lower wire. Find the longitudinal strain in both wires. Area of cross section of each wire is 0.005 cm^2 and Young modulus of the metal is 2.0xx10^11 Nm^-2. Take g=10ms^-2

A potentiometer consists of a wire of length 4m. And resistance 10 Omega is connected to cell of emf 2V The potential difference per unit length of wire will be

A block of weight 10 N is fastened to one end of a wire of cross sectional area 3 mm^2 and is rotated in a vertical circle of radius 20 cm. The speed of the block at the bottom of the circle is 2ms^-1 . Find the elongation of the wire when the block is at the bottom of the circle. Young modulus of the material of the wire =2xx10^11Nm^-2 .

A sphere of mass 20 kg is suspended by a metal wire of unstretched length 4 m and diameter 1 mm. When in equilibrium there is a clear gap of 2 mm between the sphere and the floor. The sphere is gently pushed aside so that the wire makes an angle theta with the vertical and is released. Find the maximum value of theta so that the sphere does not rub the floor. young's modulus of the metal of the wire is 2.0xx10^11 Nm^-2 . Make appropriate approximation.

A wire of length L and cross section A is made of material of young's modulus y. It is stretched by an amount x. What is the work done ?