Question

A book with a mass of 1 kg is sitting on a desk. How much gravitational force is acting on the book? 1N 0 N 9.8 N 0.98 N​

Answer 1

The gravitational force is always equal to the mass times the acceleration due to the gravitational force:

 ⇒ In this case

• mass: 1 kg

• acceleration due to gravitational force: 9.8 m/s²

Let's calculate:

 $Gravitational_.Force = 1kg*9.8m/s^2=9.8N$

Answer: 9.8 N

Hope that helps!