Three masses are placed on the x-axis : 300 g at origin, 500g at x = 40 cm and 400g at x = 70 cm. The distance of the centre of mass from the origin is :

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Accepted Answer

Correct answer: A. (a)Xcm = 3 0 0×(0)+5 0 0(4 0)+4 0 0×7 03 0 0+5 0 0+4 0 0 Xcm = 5 0 0×4 0+4 0 0×7 01 2 0 0 Xcm = 5 0+7 03= 1 2 03 = 40 cm

$Three masses are placed on the x-axis : 300 g at origin, 500g at x = 40 cm and 400g at x = 70 cm. The distance of the centre of mass from the origin is :$

Solution

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