brief note of lesson gravity class 9
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Explanation:
When an object falls down towards the earth under the gravitational force alone, we say the object is in free fall.
G used as universal gravitational constant
The main formula of this chapter is
F=G×M1×M2/D^2
where F is force, M1 is mass 1 and M2 is Mass 2
D^2 is Distance powered squared.
The explanation is the attraction of force is directly proportional to the distance between the masses of any two objects and inversely proportional to the squared distance between them
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