Ask a Doubt
Request a call back

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

CBSE Class 11-science Answered

<div><img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=16e0163397a1613099801f3638ac03f1.png" alt="W h a t space i s space f o r c e space r e q u i r e d space t o space s t r e t c h space a space s t e e l space w i r e space 1 s q. c m space i n space c r o s s minus s e c t i o n space t o space d o u b l e space i t s space l e n g t h ? left parenthesis Y subscript s equals 2 cross times 10 to the power of 11 N space m to the power of negative 2 end exponent right parenthesis" align="middle" /></div>
Asked by surajsubedi14 | 28 Feb, 2015, 08:28: PM
Expert Answer
begin mathsize 12px style Given colon Area space of space cross space section comma space straight A equals space 1 space cm squared space equals space 10 to the power of negative 4 end exponent space straight m squared Young apostrophe straight s space modulus comma space straight Y space equals space 2 space cross times space 10 to the power of 11 space straight N divided by straight m squared Change space in space length comma space ΔL space equals space straight L space left parenthesis since space length space is space to space be space double right parenthesis Hence comma space straight Y space equals space fraction numerator FL over denominator straight A space ΔL end fraction rightwards double arrow space straight F space equals space fraction numerator YA ΔL over denominator straight L end fraction rightwards double arrow space straight F space equals space fraction numerator 2 space cross times space 10 to the power of 11 space cross times space 10 to the power of negative 4 space cross times space end exponent straight L space over denominator straight L end fraction space rightwards double arrow space straight F space equals space 2 space cross times space 10 to the power of 7 space straight N Hence comma space space 2 space cross times space 10 to the power of 7 space straight N space force space is space required. end style
Answered by Priyanka Kumbhar | 01 Mar, 2015, 01:22: PM

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 11-science - Physics
define hokes law
Asked by ankitkg62880 | 04 Mar, 2022, 10:05: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
10. Sudden cooling is known as
Asked by radhakrishna200329 | 15 Feb, 2022, 09:10: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
Que:- which are the top 5 elastic substances in the world?
Asked by advssdrall | 10 Nov, 2021, 09:01: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
 Calculate the change in volume of an iron block 10 cm × 20 cm × 5 cm if its temperature is raised from 10 °C to 40 °C. Given, coefficient of linear expansion of iron =1.2 × 10-5 °C  
Asked by medhavi1615 | 21 May, 2021, 11:32: AM
ANSWERED BY EXPERT
CBSE 11-science - Physics
What is hooks law of physics?    
Asked by kushalnadiad | 23 Oct, 2019, 08:10: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
What is a perfectly plastic body?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
What do you mean by the elastic limit?
Asked by Topperlearning User | 24 Jul, 2014, 03:25: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
What is elastic fatigue?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
What do you mean by stress?  Is it scalar or vector?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT
CBSE 11-science - Physics
What do you mean by normal stress?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get FREE Sample Mock Papers for Final Exams
Download Now
×