Answer :

We can find the force of gravity acting on an object by using the formula

$$
F = m \times g,
$$

where:
- $m$ is the mass of the object,
- $g$ is the gravitational acceleration on Earth.

Here, the mass is given as

$$
m = 20\, \text{kg},
$$

and the gravitational acceleration on Earth is approximately

$$
g = 9.8\, \text{m/s}^2.
$$

Substitute the given values into the formula:

$$
F = 20\, \text{kg} \times 9.8\, \text{m/s}^2 = 196\, \text{N}.
$$

Thus, the force of gravity acting on the object on Earth is $196\, \text{N}$.

The correct answer is B.

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Rewritten by : Barada