Question

# As shown in figure the tension in the horizontal cord is 20 N. The weight W  and tension in the string OA in Newton are

A
303,30
B
203,40
C
603,30
D
403,30

Solution

## The correct option is B 20√3,40 From the figure T sin 30∘=20                  …(i)                          T cos 30∘=W                     ...(ii) By solving equation (i) and (ii) we get W=20√3N and T=40N

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