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Q.

Find tension in string if $θ =30°$ and the mass hanged in middle of the string is equal to 22 kg.

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a

Infinite

b

220 N

c

Between 110 N and 220 N

d

110 N

answer is B.

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Detailed Solution

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$2 Tsin θ = Mg \Rightarrow T = \frac{Mg}{2 \sin θ} = \frac{22 \times 10}{2 \times \frac{1}{2}} = 220 N$

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Find tension in string if θ=30° and the mass hanged in middle of the string is equal to 22 kg.