First slide

Mechanical equilibrium force cases

Question

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

Easy

A

110 N
B

220 N
C

Infinite
D

Between 110 N and 220 N

Solution

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

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