Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

(i) Prove that the work done in stretching a wire = ½ x tension x extension. (ii) Prove that the work done per unit volume in stretching a wire for every type of strain = ½ x stress x strain.
Asked by Topperlearning User | 24 Jul, 2014, 04:55: PM
answered-by-expert Expert Answer

(i) Let L be the original length of a wire of cross-section A and Young's modulus Y.

Let the extension in the wire be l.

Let dl be the further extension in the wire. Then, small work done dW in the extension gets stored in the wire and raises its energy.

dW = F dl

Answered by | 24 Jul, 2014, 06:55: PM

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 11-science - Physics
assertion: young modulus for a perfectly plastic body is zero Reason:for a perfectly plastic body restoring. force is zero
Asked by desaipravinbhai63 | 28 Dec, 2023, 07:59: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
A horizontal rod is supported at both the end sand loaded at the middle. if L is length and Y is young modulus then depression is directly proportional to
Asked by harshitajain5757 | 05 Dec, 2023, 12:45: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
State Hook's law on what factors does the modulus of elasticity of a subtance depend?
Asked by souravkheto234 | 17 Jun, 2021, 12:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Is strain is dimensions less
Asked by Zubair8 | 30 Dec, 2019, 10:16: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
The area of cross section of a wire and its length are 1mm^2 and 2mm respectively.how much will be the work done to increase its length by 0.1mm . Youngs modulus of material of the wire=2.0*10^11n/m^2
Asked by Duhlani001 | 14 Apr, 2019, 03:21: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
a wire 1 mm diameter and 1 m long fixed at one end is stretched by 0.01 mm when a load of 10 kg is attached to its free end . calculate young's modulus of elasticity.
Asked by apetkar | 07 Mar, 2019, 08:23: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
Define shear modulus and show that shear stress = shear modulus x theta (where theta is the angular displacement of cylindrical from the vertical position of the cylinder) .
Asked by anishakumari9454 | 02 Feb, 2019, 11:01: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
(a)  Define Young's modulus of a material. (b)  Define Bulk modulus of a body.
Asked by Topperlearning User | 25 Jul, 2014, 08:52: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
(a)  What do you mean by modulus of rigidity? (b)  Which of the following state of matter has the least volume elasticity: solid, liquid or gas?
Asked by Topperlearning User | 25 Jul, 2014, 08:54: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Physics
What is the ratio of SI units to the CGS units of the modulus of rigidity?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×