Question

The weight of an object is 40 kgf. It's mass is approximately __________.​

Answer 1

Explanation:

w=mg

40=m×9.8

m=4.081kg

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Answer 2

Given,

The weight of the object is 40 kgf

To find,

The mass of the object.

Solution,

From the already derived mathematical relationship we get the following mathematical equation.

1 kgf = 9.8 Newtons

So,

40 kgf = 9.8 × 40 = 392 Newtons

Now, the 392 Newtons is the amount of force.

And, we know that,

Force = Mass × Acceleration

392 = Mass × 9.8

Mass = 392/9.8

Mass = 40 kilograms

[ Because, SI unit of the mass is kilograms.]

Hence, the mass of the object is approximately 40 kilograms.