Question

One autumn day, Ethan was sitting under a tree. He repeatedly got hit on the head and shoulders by falling acorns. He looked up at the huge oak tree and thought, "This is so much like the story of Sir Isaac Newton and the apple tree." According to the story, what had Newton discovered?

Answer 1

the theory of gravity

Answer 2

Sir Isaac Newton discovered that all bodies with mass attract each other with a force called the gravitational force.

Newton observed falling bodies ( apples on his head) and concluded that the objects fall towards the Earth because of the attractive force exerted by the Earth on the object. This force is a force of attraction that exists between two masses.

Newton's law of gravitation states that the force of attraction between two point masses is directly proportional to the product of their masses and inversely proportional to the square of distance between the two masses.

Mathematically,

`F=(GMm)/(r^2)`