Determine the force with which a body weighing 2 kg acts on the surface of the earth.

The force with which the body acts on the surface of the earth corresponds to the gravity of the body at rest in the inertial frame of reference, is equal to the weight of the body and is calculated by the formula:
Ft = P = m * g, where m is the body mass (m = 2 kg), g is the acceleration of gravity (we take g = 10 m / s ^ 2).
Let’s calculate the value of the acting force:
Ft = m * g = 2 * 10 = 20 N.
Answer: The effective force is 20 N.