Ask a Doubt
Request a call back

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

JEE Class main Answered

solve
question image
Asked by sarveshvibrantacademy | 18 May, 2019, 01:10: PM
answered-by-expert Expert Answer
when the wire is pulled at middle to a distance a, increase in length as shown in figure = PR+RQ
PR+RQ  = begin mathsize 12px style 2 square root of L squared plus a squared end root space equals space 2 L space open parentheses 1 plus a squared over L squared close parentheses to the power of bevelled 1 half end exponent space equals space 2 L space plus space a squared over L space space space w h e n space space a over L less than less than 1 end style
hence change in length ΔL = ( a2/ L )   and strain (ΔL/2L) = ( a2 / 2 L2 ) ....................(1)
 
if Y is youngs modulus, then we have  Y = stress / strain  =  (T/A) / strain ...................(2)
 
where T is tension in wire, A is area of cross section
 
using eqn.(1) and (2), we get T = begin mathsize 12px style fraction numerator a squared space πr squared over denominator 2 L squared end fraction Y end style
Answered by Thiyagarajan K | 18 May, 2019, 04:03: PM

Application Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
JEE main - Physics
explain it clearly
question image
Asked by ravichandraravula66 | 29 Apr, 2024, 11:20: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
Alternating Current
question image
Asked by kmani310507 | 28 Apr, 2024, 04:38: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
find current
question image
Asked by arivaryakashyap | 23 Apr, 2024, 10:40: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
Three equal charges, 2⋅0 × 10 − 6 C each, are held fixed at the three corners of an equilateral triangle of side 5 cm. Find the Coulomb force experienced by one of the charges due to the rest two.
question image
Asked by ratnadeep.dmr003 | 21 Apr, 2024, 11:06: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
Time period for a simple harmonic motion (d ^ 2 * x)/(d * t ^ 2) =- mu xis:
Asked by ksahu8511 | 19 Apr, 2024, 11:55: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
find the acceleration
question image
Asked by mohammedimroz | 13 Apr, 2024, 09:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
solution of 12th question
question image
Asked by medhamahesh007 | 02 Apr, 2024, 11:11: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
if Bi with a mass number 211 and atomic number 83 undergoes beta decay the resultant daughter nuclei will be
Asked by gundlasumathi93 | 31 Mar, 2024, 02:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
four charges are arranged at corners of square abcd as in figur the force on charge kept at centre o is
question image
Asked by chhayasharma9494 | 31 Mar, 2024, 12:47: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
two small conducting spheres each of mass 9×10‐⁴kg qre suspended from the same point by non conducting strings of length 100cm. they are given equal and similar charges until the strings are rqually inclined at 45° each to the vertcal. The charge on each sphere is
Asked by archithateja3 | 30 Mar, 2024, 10:23: 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
×