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 :

Question

Dr. Abubacker · Accepted Answer

[Solution from source] x_cm = (300 × 0 + 500 × 40 + 400 × 70)/(300 + 500 + 400) = 48000/1200 = 40 cm. Forgetting the 300 g mass at the origin in the denominator gives a larger, wrong value. Answer (1).

Q. 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 :

Explanation

Reviewed by Dr. Abubacker

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