If three blocks A , B and Cof equal weightofmass2 kg .each are hangingonastringpassingoverafixedpulley atshown in givenfigure. what is thetension T in thestring connecting theweightsofBandC.
rudra pratap , 7 Years ago
Grade 12
1 Answers
Arun
Last Activity: 7 Years ago
Let the required tension be T and the tension in the string connecting A and B be T 1
equations are:
for C = 2 g - T = 2 a (i)
for B = 2 g + T - T 1 = 2 a (ii)
and T 1 - 2 g = 2 a (iii)
adding (i), (ii), (iii)
2 g = 6 a or a = g/3
substituting in (i) = T = 2(g -a) = 2(g - g/3) = 4 g/3
= 4(9.81)/3 = 13.08 N
Regards
Arun (askIITians forum expert)
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