Questions
Three masses 2 kg, 3 kg and 4 kg are lying at the corners of an equilateral triangle of side .The (X)
coordinate of center of mass is
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Correct option is B
Xcm=m1x1+m2x2+m3x3m1+m2+m3=2×0+3×ℓ+4×ℓ22+3+4=59ℓ
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The mass of a uniform ladder of length 5 m is 20 kg. A person of mass 60 kg stands on the ladder at a height of 2 m from the bottom. The position of centre of mass of the ladder and man from the bottom nearly is
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