A uniform horizontal beam, pivoted at its right-hand end, is in equilibrium. A force of 60 N
acts vertically upwards on the beam as shown.
60N
20 cm
30 cm
pivot
weight
of beam
What is the weight of the beam?
(A) 36 N
(B) 90 N
(C) 40 N
(D) 100 N
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Explanation:
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Answered by
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Answer:
answer is D 100N
clockwise moment = anticlockwise moment
60x20=30xF
1200=30F
F=40N
40+60 = 100N
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