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The total of all the masses of small particles adds up to give the total body mass. This mass lies along with gravity gives a force vector which is being passed by ________

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The total of all the masses of small particles adds up to give the total body mass. This mass lies along with gravity gives a force vector which is being passed by ________

(a) Axis of rotation

(b) Axis of rolling

(c) Centre of Gravity

(d) Centre of mass

This question was posed to me in an interview for job.

This intriguing question originated from Centre of Mass in chapter Centre of Gravity and Centroid of Engineering Mechanics

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Right answer is (c) Centre of Gravity

Easy explanation: The total body mass along with the product of gravity always passes through the centre of gravity. All the forces are parallel is the right answer. Thus the total sum of all these small weights add up to the total weight of the body. Which passes through the centre of gravity.

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