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Q.

A 40 N block supported by two ropes. One rope is horizontal and other makes an angle 30∘ with the ceiling. The tension in the rope attached to the ceiling is approximately 

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a

80  N

b

40 N

c

403 N

d

403 N

answer is A.

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Detailed Solution

T sin 30∘=w=40

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∴T2=40 or T =80 N

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A 40 N block supported by two ropes. One rope is horizontal and other makes an angle 30∘ with the ceiling. The tension in the rope attached to the ceiling is approximately