Gravity The gravitational force at the surface of the planet is the force that binds all bodies to earth, this force is one of the four forces recognized by physicists, and this kind of force is known as "gravity" it attracts every celestial object to earth, and though it is the most important of the forces essential for our lives, it is the least comprehended of them all Throughout ages scientists have tried to solve the mystery of gravity, and one of the first discoveries concerning gravity
Gravitational Force of Bodies All bodies with mass exert a gravitational pull on the bodies around them, even you and me. The larger the radius and mass of the body the larger the force. Most people know that the force of gravity on earth is much greater than on the moon, but how much larger is it, and how is gravity calculated? German astronomer Johannes Kepler (1576-1630) spent years observing the motion of planets and developed a set of laws for planetary motion. Years after his death Physicist
A brief history of time by Stephen Hawking is a novel about the known range of time from the big bang up to black holes. Hawking talks about different theories and how they have changed over time from Copernicus to himself. He combines all known physics and astrophysics and displays them quickly and simply. He states that the goal of science is to able to accurately describe the universe in one theory. As he tells about theories that have disproved other theories of that time, it is proof that science
The Man Who Never Gave Up There are many people in the world that do well in school and on tests that are considered very smart people. Stephen Hawking is an example of a man who is more than smart; he is a genius. He is one of the smartest men to have lived in the twentieth and twenty-first century and he has a disease that usually is fatal in two to five years. Living with this disease caused Stephen Hawking to change his lifestyle to overcome this detrimental disease. Stephen Hawking overcame
determines the energy they must have to expel to live within this force. The ideal axis for obtaining the greatest balance is one that is a strait line through the center mass of the body. This line should be identical to the one between the gravitational force between the body and the earth. The human body has adapted over many generations and there are markers that will show where a strait line should form to be properly aligned. This imaginary line connects points at the top of the head, middle
EXPLANATION ====================== The car (marble) has GPE at the top of the slope, and it has KE at the bottom. As the car (marble) rolls down the slope, GPE changes into KE. Text Box: KE = ½ MV2 GPE = MGH As an object falls, its Gravitational Potential Energy is turned into Kinetic Energy. The increase in GPE is equal to the increase in KE. As energy is neither destroyed nor created, it must be equal (where there are no other energy transfers). From this, I can conclude the following:
vertical height Hypothesis The greater an object's gravitational potential energy the longer it will take to cease all movement. This is because it will have more kinetic energy - and if we assume that the energy is removed at a constant rate by friction then the more kinetic energy an object has the longer it will continue moving Background knowledge This experiment will be looking at the transfer of energy from gravitational potential energy (gpe) to kinetic energy (ke) and the
Stephen W. Hawking Stephen W. Hawking has a mind set that is beyond today's general way thinking. His attempts to identify a grand unification theory that unites everything we know about the physical world and science far exceeds any realm of thinking that has ever graced this earth. Hawking was born on January 8, 1942 in Oxford, England. He spent most of his childhood in and around London, and was always a bit of a self-educator. He was interested in the stars, and his family used to lie out on
God is not real and does not exist. There many reasons why god cannot exist. Many people believe that God does exist but those are just beliefs, there is no real evidence that God exists. People try to prove that god exists with the Bible; however we don’t now that the bible is the truth. In many ways, people believe that God is a person, but science has proven that there is a particle that must’ve created everything. This particle is known as the God particle. Although science has proven that some
Stephen Hawking Research Paper Second Draft Our galaxy the Milky Way, has over 100 million black holes in it? A black hole is usually thought of dark swirling mass that sucks everything around it in. Stephen Hawking was the one who made people think about black holes this way. He was the person that provided proof for them and made many theories about them. All of Hawking’s books are bestsellers, despite them being about physics. He is known internationally. Stephen Hawking is a physicist made many
There are many people who could be considered a hero. A hero doesn’t have to be someone who could fly, run with great speed, and shoot lasers. A hero can be anyone who makes a difference. It can be your parents, a firefighter , your doctor, or even a friend. They don’t need to be a professional athlete or celebrity, they can be a normal person living a normal life. One modern day hero is Stephen Hawking because of his great accomplishments; he overcame the risks of his disease, helps scientists and
speed of the trolley is affected by the gradient of the ramp. The speed of the trolley will be affected by the gradient of the ramp by many factors. One of these factors is gravitational potential energy. GPE is the energy stored in an object because of its height. The energy is stored as a result of the gravitational pull of the earth for the object. GPE is also affected by the mass of the object but I am going to use the same trolley. I am going to increase the gradient of the ramp and therefore
how high a tennis ball will bounce back after it has been dropped from a certain height How a Tennis Ball Bounces As the ball is elevated the ball gains gravitational potential energy equal to the ball's weight multiplied by its change in height1. When the ball is dropped, the height decreases, and therefore so does the gravitational potential energy. At the same time, the velocity of the ball increases due to gravity, and therefore the kinetic energy increases, as kinetic energy half the
Physics of a Mountain Bike This paper will discuss some of the physics involved in bicycles. Specifically, mountain bikes with suspension. A bicycle is a very energy efficient vehicle. Its wheels allow its rider to make full use of inertia and gravitational potential energy. The basic design of a bicycle has been around for over 100 years and compared to other things, has changed very little. Some of the topics that will be covered are: frames, wheels, suspension forks, suspension frames, brakes and
higher as well. This would mean that at higher points the trolley would have more gravitational potential energy. This would be a good variable to investigate because we can use various gradients but it might be slightly difficult to measure some angles with the protractor. * Height of start position- this affects the motion of the trolley because as the height gets larger the trolley gains more gravitational energy. This would be a good variable to investigate because there are many heights
the pendulum swings through is equal to twice the angle that it is dropped at, this is because it will swing from the angle to 0° and will carry on going for approximately the same amount as it went through due to its momentum. Text Box: Gravitational potential energy (Egpe) = Mass (M) * acceleration due to gravity (G) * height (h) The second way that the angle from which the pendulum is dropped will
the speed and distance the ball rolls because the higher the ramp, the more gravitational potential energy the ball has, which is then transferred to kinetic energy. The length of the ramp affects the gradient, which affects the speed and distance the ball rolls. The surface of the ramp and marble cause friction, which affects the speed and distance the ball rolls. The weight and size of the marble affect the gravitational potential energy and the amount of friction, which affects the speed and distance
faster. According to Newton's Second Law, mg - F = ma (in this case, the resultant falling force of the ball minus the air resistance force is equal to the mass of the ball multiplied by its acceleration). The mass of the ball (m) will remain constant. As the air resistance force (F) increases to the resultant force (mg), the acceleration of the ball (a) decreases to nothing, so the ball continues at its previous velocity without accelerating. Above a certain height, therefore, I do not believe
The stopping distance of the trolley can be measured, therefore allowing us to measure the potential energy in the trolley. [IMAGE] When any mass is raised it gains gravitational potential energy. The formula used to calculate potential energy is as follows: - PE = mgh Potential energy = Mass x Gravitational Pull x Height Raised If there are no opposing forces acting upon the trolley then kinetic energy should be equal to potential energy. The formula used to calculate kinetic
a machine has energy it has the ability to apply a force to another body. There are many different forms of energy and there are many different places by which energy can be gathered. Forms of energy include: Potential energy, kinetic energy, gravitational potential energy, elastic potential energy and there are many more. Energy can be gathered in many ways using our natural recourses from the environment, for example: solar energy (from the sun) and hydroelectricity (where electricity is gathered