A. 60N and 60°
B. 60N and 30°
C. 20√3 N and 60°
D. 20√3N and 30°
Correct Answer:
Option A – 60N and 60°
Explanation
Resolve vertically, 40cosθ = 20, θ = 60°
Resolve horizontally, f = 40sinθ = 40sin60°
= 40(3/√2)
= 20√3 N
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