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23. Two particles of masses 1 kg and 3 kg are located at (2+5 13) m and (-6+4-2) mrespectively. Find the position of their centre of mass,(2) |
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Answer» X=(1*2+3*-6)/(1+3) = (2-18)/4 =-4i Y=(1*5+3*4)/(1+3) = (5+12)/4 =4.25j Z=(1*13+3*-2)/(1+3) = (13-6)/4 =1.75k C.M.= -4i + 4.25j + 1.75k |
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