College

Select the best answer for the question:

If an object has a mass of 20 kg, what's the force of gravity acting on it on Earth?

A. 1.96 kg
B. 2.04 kg
C. 32.67 N
D. 196 N

Answer :

To find the force of gravity acting on an object with a mass of 20 kg on Earth, you can use the formula for gravitational force:

[tex]\[ \text{Force of gravity} = \text{mass} \times \text{acceleration due to gravity} \][/tex]

On Earth, the acceleration due to gravity is approximately [tex]\( 9.8 \, \text{m/s}^2 \)[/tex].

1. Identify the mass: The mass of the object is 20 kg.
2. Use the acceleration due to gravity: On Earth, it is [tex]\( 9.8 \, \text{m/s}^2 \)[/tex].
3. Calculate the force of gravity:

[tex]\[
\text{Force of gravity} = 20 \, \text{kg} \times 9.8 \, \text{m/s}^2 = 196 \, \text{N}
\][/tex]

The force of gravity acting on the object on Earth is [tex]\( 196 \, \text{N} \)[/tex].

Therefore, the correct answer is:

D. 196 N