Question

Define free fall. What are the conditions for an object to be under free fall? Also give the value for the
acceleration experienced by the object under free fall.

Answer 1

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according to Newton's universal gravitational law, the force of gravitation exerted by the Earth is equal to G (universal gravitational constant) multiplied by Mass of the Earth(M) multiplied by Mass of the object(m) divided by the radius squared(r²) and by Newton's second law of motion force due to gravitation is equal to Mass of the object (m) multiplied by acceleration due to gravity (g).

F(gravitational)= G.M.m/r²=mg

cancelling out the Mass of the object (m)

we find that g=G.M/r²

therefore the acceleration experienced by an object during free fall is independent of its mass

Answer 2

Answer:

The falling of a body (or object) from a height towards the earth under the gravitational force of earth (with no other forces acting on it) is called free fall. And such a body is called 'freely falling body' (or 'freely falling object'). So whenever a body or object) falls towards the earth on its own, we say that is under free fall or that is a freely falling body (or free falling object).

Example:

(in the image attached) This bungee-jumper is falling down only under the gravitational force of the earth . He is said to be in free fall. (or freely falling towards the earth)