Ask a Doubt
Request a call back

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

CBSE Class 11-science Answered

can you please explain poisson's ratio with formula and how it is actually to be applied?
Asked by devyani.gauri99 | 28 Dec, 2015, 09:40: PM
answered-by-expert Expert Answer
Poisson's ratio is given as 
begin mathsize 12px style straight sigma equals fraction numerator Lateral space strain space over denominator Longitudinal space strain end fraction end style
When a deforming force is applied at the free ends of a suspended wire of radius R and length l, then the radius of the wire decreases by dR and its length increases by dl. So, a single force produces two types of strains: 
begin mathsize 12px style Longitudinal space strain equals fraction numerator increment straight l over denominator straight l end fraction space and space Lateral space strain equals fraction numerator negative increment straight R over denominator straight R end fraction end style
Thus, begin mathsize 12px style straight sigma equals fraction numerator Lateral space strain space over denominator Longitudinal space strain end fraction equals fraction numerator negative increment straight R divided by straight R over denominator increment straight l divided by straight l end fraction end style 
The negative sign shows that if the length of the wire increases, then the radius decreases. 
Answered by Yashvanti Jain | 29 Dec, 2015, 11:14: AM

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
×