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The boy raising a bucket pull it an angle to each other if each extract a force of 20N and their effective pulls is 30N what is the angle thita between their arms |
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Answer» tion:LET the angle between the lines of action of their equal forces F be 2θ F = 20 N resultant force in the vertical direction upwards = 2F cosθ => 30 = 2(20) cos θ => cosθ = 3/4 or θ = 41.410° => 2θ = 41.410° x 2 = 82.819° Ans: angle b/w their ARMS = 82.819° |
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