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Q.

In the pulley - block arrangement shown in the figure find the relation between a_A, a_B and a_C

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a

${2a}_{A} + a_{B} + 2 a_{C} = 0$

b

$a_{A} + 2 a_{B} + a_{C} = 0$

c

${2a}_{A} + 2 a_{B} + a_{C} = 0$

d

$a_{A} + a_{B} + a_{C} = 0$

answer is D.

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Detailed Solution

$x_{A} + 2 x_{B} + x_{C} = l$

Question Image

differentiating twice, we get

$a_{A} + 2 a_{B} + a_{C} = 0$

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