Question

Mass of an object is 40 kg, what is its weight on the earth ? (Take g=10 m/s2)
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Answer 1

Weight = mass*gravity
=40*10
=400N

Answer 2

400N

The weight of the object is the gravitational force acting on it. The gravitational force exerted on the item is defined as a vector quantity in several mainstream textbooks. Some define weight as a scalar quantity, given gravitational force's magnitude. The mass of 1,000 cubic cm of water is very nearly equal to a kilograms (this was initially intended to be exactly equal).