SOLAR SYSTEM

UNIVERSE

SATELLITESICY BODIES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Gravitational force between two massive spheres
A
is always an attraction
B
depends on how massive they are
C
depends inversely on the square of the distances between them
D
all of the above
Explanation: 

Detailed explanation-1: -According to Newton’s law of gravitation, any two bodies, in this universe, attract each other with the force of gravity. So, the gravitational force between two masses is always attractive.

Detailed explanation-2: -The size of the gravitational force is proportional to the masses of the objects and weakens as the distance between them increases. Both objects exert an equal attractive force on each other: a falling object is attracting the Earth with the same size force as the Earth is attracting it.

Detailed explanation-3: -The force of gravity depends directly upon the masses of the two objects, and inversely on the square of the distance between them. This means that the force of gravity increases with mass, but decreases with increasing distance between objects.

Detailed explanation-4: -So as two objects are separated from each other, the force of gravitational attraction between them also decreases. If the separation distance between two objects is doubled (increased by a factor of 2), then the force of gravitational attraction is decreased by a factor of 4 (2 raised to the second power).

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