A stone resting on the ground has a gravitational force of 20 N acting on it. What is the weight of the stone? What is its mass? $(g=10 m/s^2)$.


As given, gravitational force $=20\ N$

Gravitational acceleration $g=10\ m/s^2$

As known, the weight of the stone resting on the ground is equal to the gravitational force it has.

Therefore, the weight of the stone $W=20\ N$

Let $m$ be the mass of the stone.

We know the relationship between the mass and weight of the object

$W=mg$

Or $20=m\times 10$

Or $m=\frac{20}{10}$

Or $m=2\ kg$

Therefore, the mass of the stone is $2\ kg$.

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Updated on: 10-Oct-2022

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