Find the work done by Aman weight ing 140Kg and carring 20kg load to the top of a ladder 16m long making an angel of 30degree with horizontal g=9.8m/s.
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work done is 12544 joules
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Thus the work done is W = 12544 J
Explanation:
Given data:
Weight of Aman = 140 Kg
Load = 20 Kg
Total weight = 140 + 20 = 160 Kg
Height = 16 m
Angle = 30°
As we know that
Work done = Force x displacement
W = F . s = F.d cosθ
W = m.g.s cosθ
W = 160 x 9.8 x 16 cos(30°)
W = 160 x 9.8 x 16 x 1/2
W = 12544 J
Thus the work done is W = 12544 J
W =
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