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Weight and mass of an object are defined with Newton’s laws of motion.

June 1, 2025 by rawan239

Weight and mass of an object are defined with Newton’s laws of motion. Which among the following is true ?

Weight is a constant of proportionality.

Mass is a constant of proportionality.

Mass is not a constant of proportionality.

Weight is a universal constant.

This question was previously asked in

UPSC NDA-2 – 2021

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Newton’s second law of motion states that the acceleration (a) of an object is directly proportional to the net force (F) acting on it and inversely proportional to its mass (m). Mathematically, F = ma. In this equation, mass (m) is the constant of proportionality relating the force to the acceleration it produces.

Mass is an intrinsic property of an object that measures its inertia (resistance to change in motion) and its gravitational pull. Weight (W) is the force exerted on an object due to gravity (W = mg), where g is the acceleration due to gravity.

Mass is a fundamental constant of proportionality in Newton’s second law and is a universal property of the object. Weight is a force and is not a universal constant; it varies depending on the strength of the gravitational field (value of g).

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