The force required to overcome gravity depends on the mass of the object being acted upon and the strength of the gravitational field. The force needed to overcome gravity is typically referred to as the "weight" of an object, and it is given by the equation:
Weight = mass × acceleration due to gravity
In most everyday situations on Earth's surface, we can assume a constant acceleration due to gravity of approximately 9.8 meters per second squared (9.8 m/s^2). This value may vary slightly depending on the location, as gravity is slightly stronger near Earth's poles and weaker near the equator.
So, if you have the mass of an object, you can calculate its weight by multiplying the mass by the acceleration due to gravity. For example, if an object has a mass of 10 kilograms, its weight would be:
Weight = 10 kg × 9.8 m/s^2 = 98 newtons
Therefore, in this example, it would take a force of 98 newtons to overcome the gravitational pull on that object and make it effectively weightless. It's important to note that overcoming gravity entirely would require a force equal to or greater than the weight of the object, directed opposite to the gravitational force.