SSC
PHYSICS
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
gravity
|
|
acceleration
|
|
weight
|
|
free fall
|
Detailed explanation-1: -Gravitational force-an attractive force that exists between all objects with mass; an object with mass attracts another object with mass; the magnitude of the force is directly proportional to the masses of the two objects and inversely proportional to the square of the distance between the two objects.
Detailed explanation-2: -The weight of an object is defined as the force of gravity on the object and may be calculated as the mass times the acceleration of gravity, w = mg. Since the weight is a force, its SI unit is the newton.
Detailed explanation-3: -Originaly defined by Newton, and refined by Einstein, gravity is essentially the natural force of attraction between any two objects. Two factors determine the magnitude of the gravitational force between two objects: (1) their masses and (2) the separation distance between them.