Gravitation Flashcards
State Newton’s law of gravitation
It state that every body in the universe attract each other with the force which is directly proportional to the product of their masses and inversely proportional to the square of the distances between them.
Formula to find the gravitational force
F= Gm1m2/ r²
SI unit of gravitational constant
G= Nm²/kg²
Value of the gravitational constant
6.67×10-¹¹ Nm²/kg²
What are the importance of gravitational force?
1) the force that binds to the earth
2) the motion of moon around the earth
3) the motion of planets around the sun
4) the occurrence of tides due to the gravitational force of moon
5) the flow of water in the river due to the gravitational force of Earth
If the distance between the two objects is doubled what will happen to the gravitational force?
It reduces to 1/4
If the distance between the two object is tripled what will happen to the gravitational force?
It will reduce to 1/9
Is the distance between the two objects is increased by 4 times what will happen to the gravitational force?
It reduces to 1/16
If the distance between the two objects is halved what will happen to the gravitational force?
It increases by 4 times
If the distance between the two object reduces to 1/3 what will happen to the gravitational force?
It will increase by 9 times
If each mass of the object is increased by two times what will happen to the gravitational force?
It increases by 4 times
Is mass of each of the object is increased by 5 times what will happen to the gravitational force?
It increases by 25 times
If each mass of the objects reduces to half what will happen to the gravitational force?
It reduces by 1/4 times
If each of the mass of the object produces to 1/3 what will happen to the gravitational force?
It reduces to 1/9
If each mass of the object is increased by 5 times and the distance between is also increased by 5 times what will happen to the gravitational force?
Force is neither reduced nor increased it remains the same
Define free fall
The falling of an object from a height towards the earth under the gravitational force of Earth
Does a freely falling body depends upon the mass the object falling?
No, It does not depends on the mass of the falling object
Two objects of masses 10 kg and 4 kg are dropped from the same height which object will reach the ground first and why?
Both objects will reach the ground at the same time because the freely falling body does not depend on the mass of the falling object.
