Newton’s universal law of gravitation did emanate from his desire to create a connection between astronomical movements and falling bodies. This was in connection to a fallen apple. The apple is part of the worldwide folklore and it comes with so much importance because Newton’s work did manage to answer very pertinent old questions on the simplicity and the unity that exists within nature. The gravitational law and laws of motion as advanced by Newton in his work are very instrumental even to this age.
Newton’s universal law of gravitation is simply and states that every particle in the universe is constantly attracting the other using a force that exists along the line that joins them. This force has a direct proportion connection when it comes to the product of their masses but is inverse in terms of proportion when it comes to the square of the distance between the two objects. Universal law of gravitation explains several phenomenon including the motion of planets around the sun and the motion of moon around the earth.
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The earth has a gravitational force that makes the moon to move in curved path and this gravitational force is what scientists call the centripetal force. The earth in itself does not remain stationary as the moon orbits it because it exerts some force towards the moon and although the moon exerts and equal opposite force on the earth, those on earth do not feel the force as the gravity from the moon moves our bodies along the earth. This means that as the moon orbits the earth, the earth being a planet also orbits the sun. The sun is an elliptical orbit and forms the center mass orbit for both the moon and the earth. The sun and the earth therefore just like the moon and the earth exert pressure towards each other in a continuous movement as the earth rotates the orbit of the sun and it is the gravitational pull that keeps the two in check.
