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Grade 11General Physics

Chapter elasticity. Question is described in given image.

Question image for Chapter elasticity. Question is described in given
Profile image of Priyanka motiani
9 Years agoGrade 11
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1 Answer

Profile image of Vikas TU
9 Years ago
Calculate the Tension in the string first and apply the formulae as:
stress = Force/Area
2g – T = 2a
and
T – g = a
Solving both the eqns. we get,
T = > 4g/3 N
Stress = T/pir^2 => 4g/2*10^9*3 = r^2
r = 6.66 * 10^-9 m