This website uses cookies to ensure you have the best experience. Learn more

Newtons Law Of Gravity Essay

1318 words - 6 pages

Newton's Law of Universal GravitationGravity if one of the four fundamental forces in the universe. Thoughthe fundamental principles of it eluded scientists until Sir Isaac Newton was able to mathematically describe it in 1687 (Eddington 93). Gravity plays a serious part in everyday actions as it keeps everything on the ground; without gravity everything would be immobile unless a force was applied (then it would move infinitely because there would be no force to stop it).Perhaps, the best place to start then would be with such a simple item as an apple (after all it is what "sparked" Newton's creativity). The apple is one of the two curiosities (the other being the moon) that led Newton to ...view middle of the document...

Newton realized then that the moon and the apple were both being pulled towards Earth at the same rate but yet the moon was the only one who resisted the force and stayed in its elliptical orbit (Eddington 94). Newton's Third Law of Motion says that every force exerted by one object on another is equal to a force, but opposite in direction, exerted be the second object on the first (every reaction has an equal but opposite reaction). So the force of the earth pulling the apple to the ground is proportionally the same as the force the apple exerts back on the earth.Now Johannes Kepler lived some forty-five years before Isaac Newton. And he showed that the orbits of the planets in our solar system were elliptical. When the time of Newton came around he mathematically proved that, if Kepler's First Law was true, then the force on a planet varied inversely with the square of the distance between the planet and the sun. He did this using Kepler's Third Law (Zitzewitz 160). The distance in this formula is from the center of the masses and is the average distance over their entire period. It is also important to note that the force acted in the direction of this line (an important factor when dealing with vectors) (Zitzewitz 160).Newton, confident that his idea of all objects exerting a force back on Earth, devised a formula for Universal Gravitation. It is important to note that Newton was not the first to think of Universal Gravitation, he was just the first one to make considerable and remarkable proofs for it based on mathematical explanations. He said that if force is relative to the mass of an object and it's acceleration then the force between two objects must also be the same. Thus he came up with the first part of the equation. Also, as he had proved earlier using Kepler's Third Law of Motion, that the force between two objects is inversely proportional to their distances squared (an inverse square law), then that must also be part of the Universal Gravitation equation. Thus we know that the two masses and the distance are related to the force; and because the distance is inversely proportional then the product of the masses divided by the distance between their centers squared must equal the force between the two objects (Zitzewitz 161).Now earlier, Newton had proved that the force on an object was proportional to an object's mass and its acceleration. And the equation that he had formulated so far did not include anything that would...

Other Papers Like Newtons Law Of Gravity

Gravity Research Project Essay

1063 words - 5 pages pound rock, but if you take a two pound rock and split it in half and join these two halves with a very light sting then in one instance it should fall as fast as a two pound rock but in another instance it should fall as fast as a one pound rock. Johannes Kepler follows after Galileo in the line of contribution to our understanding of gravity. Kepler’s contributions in the early 1600s were three laws of planetary motion: The Law of Ellipses

Broken Family Essay

911 words - 4 pages motion be described? According to Newton's first law of motion, such a cannonball would continue in motion in a straight line at constant speed. If not acted upon by an unbalanced force, "an object in motion will ...". This is Newton's law of inertia.     Now suppose that the gravity switch is turned on and that the cannonball is projected horizontally from the top of the same cliff. What effect will gravity have upon the motion of the

Isaac Newton

617 words - 3 pages force will stay still, or will keep moving in the same direction at a steady speed. The tendency of an object to remain still, or keep moving in one direction at a steady speed is called inertia. The second law explains that an object’s acceleration depends on its mass and on the net force acting on it. Basically, it explains how a force acts on an object. An object accelerates in the direction the force is moving it. The third law states that

Spaghetti Bridge

2948 words - 12 pages on Body B, Body B exerts an equal and opposite force on Body A” (Newtons Third Law (2013). This is important when loads are applied onto the bridge for example a car travelling along the deck of our bridge would exert a pressure on the deck and the deck would exert an equal upwards force to keep the care there. We would need to make sure our deck is able to cope with this pressure without breaking. We made sure our deck was able to cope with this

Laboratory Experiment: Pendulum Bob

757 words - 4 pages should be kept constant while the length of the string is varied. The length is the manipulated variable, period (T) a responding variable while the mass of the pendulum a fixed variable. L=lengt M= mass X=amplitude g = acceleration of gravity 1. From Newton’s 2nd law of motion F= dp/dt 2. Hooke’s law F = -kx, k is the spring constant and x is the displacement Therefore, the back and forth motion can be expressed as w=2Πf = Replacing

Force and Motion

1088 words - 5 pages length). See Figure 1B below. [pic] Figure 1B 6. Select the statistics feature [pic] and determine the mean value of the force. Record the force in Newtons. _______N 7. Now stretch the rubber band 20cm. Record the force._________N 8. Now stretch the rubber band 30cm. Record the force._________N 1. Now stretch the rubber band 40cm. Record the force._________N 2. Record your measurements in

Luchimuddlo

2072 words - 9 pages other than gravity acting on them. During freefall, object experience a sense of ‘weightlessness’, but weightlessness does not mean that an object loses all its weight. Since in Physics ‘weight’ does not mean how heavy an object is, (that is known as the ‘mass’) ‘weight’ is a term used to describe how much force and object is exerting due to gravity, weight can only be felt if there is another force opposing the direction of

Physics in Everyday Use: Nympsfield Gliding Club

1864 words - 8 pages equation is the explanation for how an airplane is able to fly. It is an example of the first Law of Thermodynamics. In other words it states that Energy can not be created or destroyed. (Newtons Law) but it can be converted from one form to another. The question is how much air pressure difference is there between the top and bottom of a wing? I found the information for a Boeing 747 to use BernoulliÂ’s equation on. I

Issac Newton - Paper

1270 words - 6 pages of its path around the earth. This was the beginning for setting out his law of motion as well as the law of gravity. The Law of Motion and gravity are probably what Newton is most famous for. With his Law of Motion, he came up with three laws. 1) Deals with forces and changes in velocity. This really means that if an object is not pushed or moved by an outside force, its velocity will stay the same. 2) Newton's second law explains how an

Colossus Rollercoaster

885 words - 4 pages , so it decelerates. The tracks allow the coaster to do horrifying loops and twists. Since an object in motion tends to stay in motion (Newton's first law of motion), the coaster car will maintain a forward velocity even when it is moving up the track, opposite the force of gravity. When the coaster ascends one of the smaller hills that follows the initial lift hill, its kinetic energy changes back to potential energy. In this way, the course of the

Motion: Physics And Seat Belts

2283 words - 10 pages of very small scale, such as in molecules and atoms is known as the quantum mechanics. In the 17th century, the three laws of motion were released after a scientist called Isaac Newton, who explained the modern definition of motion. These laws have now become known as the ‘Newton’s three laws’. The three laws of motion can be used to describe the relationship between a body and the forces acting upon it. The first newtons law, also known as the

Related Essays

Newton's Three Laws Of Physics Essay

539 words - 3 pages ! Newtons Third Law Newtons third law states that: "For every action, there is an equal and opposite reaction." This law is very interesting. According to this law, when you push against a wall, it also pushes back on you. However odd this may seem, it is very important to us in everyday life. If this law was not true then the force of gravity would pulls us straight to the center of the earth. I think there are enough movies out there to

Force And Motion Essay

571 words - 3 pages - Does not change the center of gravity with slight tipping. Inertia is a term used to measure the ability of an object to resist a change in its state of motion. An object with a lot of inertia takes a lot of force to start or stop; an object with a small amount of inertia requires a small amount of force to start or stop. The word “inertia” comes from the Latin word inertus, which can be translated to mean “lazy.” Newton's Second Law An

Physics Essay

1345 words - 6 pages comes to a stop, how would Aristotle, Galileo, and Newton interpret the behavior of the ball? Aristotle would likely say the ball slows to reach its natural state. Galileo would say the ball is encountering friction, which is the unbalanced force that slows it. Newton would say a similar thing as Galileo, just more refined....Newton's First Law of Motion. 3a. Explain mechanical equilibrium. Mechanical equilibrium is when the net force on

Unorthodox Essay

1671 words - 7 pages mass m, the mass will experience a acceleration Question 5 Not complete Marked out of 1.00 Flag question Question text What is the magnitude of force in newton that should be applied to make an object of mass 1000 grams move at 10 m/s2 (s2 is s-squared) Select one: a. 10000 Newtons b. 1 Newton  c. 10 Newtons d. 100 Newtons Question 6 Not complete Marked out of 1.00 Flag question Question text If rocket produces force of 1000