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In the pulley-block arrangement shown in figure. Find the relation between acceleration of block A and B. 
  • a)
    aB = -3aA
  • b)
    aB = -aA
  • c)
    aB = -2aA
  • d)
    aB = -4aA
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
In the pulley-block arrangement shown in figure. Find the relation bet...
x1 + x2 = l1
Differentiating with respect to time,  we get v1 + v3 = 0
 Again differentiating w.r.t. time, 
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Most Upvoted Answer
In the pulley-block arrangement shown in figure. Find the relation bet...
Hello friend in this question you will have to use to constraint equation let the tension in the string connecting B is T so the tension in the upper string be 2T
and upper total tension on the block a will be 3T so using constraint equation we can write T×acc. of B + 3T×acc. of A = 0 so you will get the answer
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Community Answer
In the pulley-block arrangement shown in figure. Find the relation bet...
When we consider tension T1 in the string between A and B block and tension T2 between pulley and block A. we get,
T2= 2T1 T1(aB)=T2(aA) T1(aB)=2T1(aA) aB=2aA

Hence accelarations are in opposite directions
aB= -2aA
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