Last seen: Jan 25, 2021
The gravitational force between the earth and an object is called the force of gravity or simply earth’s gravity.
All objects moving towards earth on account of gravitational force of earth on them are said to be in free fall. This force produces a uniform acceler...
Universal law of gravitation is important as it accounts, (a) for the existence of the solar system, i.e., motion of planets around the sun. (b) f...
From the relationship, (i) If the mass of one object (say body 1) is doubled, then = = 2F Thus, the gravitational force between the two ob...
Both the earth and the moon attract each other with the same force. But according to Newton’s second law of motion, acceleration produced in a body by...
The earth attracts the moon with a force equal to the force with which the moon attracts the earth. This is because as per Newton’s third law of motio...
The gravitational force between the earth and 1 kg object on us surface is given by = This gives, F = 9.8 N
Gravitational force acts on all objects in proportion to their masses. But a heavy object does not fall faster than a light object. This is because of...
Force of gravitation, If R is reduced to i.e., The force of gravitation becomes 4 times more.
We know that true weight = apparent weight + upthrust. The cotton bag is heavier than the iron bar. This is due to the reason, that the bag of cott...
A weighing machine is a sort of spring balance which measure the weight and not the mass of a body. When we stand on the weighing machine, our weight ...
When the object has density less than 1 g cm-3 (density of water), then it floats on the surface of water, because, it always displaces more weight of...
Whenever an object is immersed in a liquid, either partially or fully, an upward force is exerted on the object by the liquid. This upward force is ca...
We know that pressure = force/area. When the string of the school bag is thin, its area is small and as such the pressure exerted on the shoulders or ...
The weight of an object depends on the value of acceleration due to gravity g. The value of g on earth is 6 times more than that of moon because, the ...
Mass 1. Mass of a body is the measure of its inertia. 2. Its S.I. unit is kg. 3. It remains constant everywhere. 4. It is measured by common b...
The acceleration with which an object fall freely towards the earth is known as acceleration due to gravity. It is denoted by g and its value is 9.8 m...
All objects falling towards earth under the action of gravitational force of earth alone are said to be in free fall.
The formula for the magnitude of gravitational force between the earth and an object on its surface is F = where F is the gravitational force. G ...
According to universal law of gravitation, every particle in the universe attracts every other particle with a force which is directly proportional to...