Physics is involved in almost everything that we do in life. Over the Thanksgiving break, I took my niece to the park, as we were both swinging the swing set, I noticed that when swinging back and forth, the swing resembled a pendulum oscillating back and forth. I had three thoughts while swinging: what is the kinetic and potential energy it requires to swing; will my 3 year old niece swing faster than me, since she weighs less; and lastly is it possible to swing above the support bar of the swing.
According to Hyperphysics, the definition of kinetic of energy is: “energy of motion” (“Kinetic Energy”, 2013). The kinetic energy of an object is the energy it possesses because of its motion. The formula that represents kinetic energy equation
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Which is the same as saying, the higher the elevation the greater the kinetic energy will be. As mentioned before, kinetic energy of a swing can be described as the fast swinging motion going back and forth.
Looking at these equations I was also able to answer my previous question, does the weight of a person effect how fast someone will swing? The example above shows that speed does not depend of mass. An adult will have the same speed of a small child, when they are released from the same height. In the absence of friction, the velocity of an object falling under gravity does not depend on the mass of the object.
Lastly, is it possible to swing over the support bar of the swing set? Although, some will argue that they have in fact swung over the bar, ideally a regular person using their own power, on a regular swing set will not be able to swing over a support bar. After doing a great deal of research on this particular topic, I found a very thorough explanation, on Quroa, that explained why this would be an impossible task. In order to make it over the bar, the centripetal acceleration at the top of the swing would need to be greater than the acceleration due to gravity. Because you change kinetic energy to potential energy as you go from the “front-end” to the “back-end” of the swinging motion, you lose
This swing is able to swing freely, so when you're ordering and hanging it, make sure
Sutton in an article for Explicator explained this significance of the swing moving faster and faster (Sutton).
9. The total energy is constant for most of the time until the ball is released and caught up and down in free fall, because extra force of the person actions changes the energy. The energy should remain constant because the kinetic and potential ratio energy
Kinetic energy is the energy an object possesses due to its motion. The difference between kinetic energy and potential energy is the kinetic energy is the energy of an object that is already in
• Help you get the right swing - A perfect swing would let your arms, shoulders and torso move together and not let things go haywire. Before you pick the one that is right for you, check it with a dummy swing where your elbows are together and not letting you put pressure on a single body part.
Our group has always enjoyed baseball, we decided to make our video on the biomechanics of a baseball swing. We all are fans of the sport, it’s America’s national pastime, and we also know there has been extensive research on this popular movement. The game of baseball was invented in 1839, by Abner Doubleday, in Cooperstown, New York. Ever since that day, the complexity, yet simplicity of the of the hitter’s swing has intrigued the players, fans, and certainly the researchers. As the years passed, we developed technology the further investigate the biomechanics of a baseball swing. Tony Gwynn was one of the first hitters to ever carry a camcorder with him everywhere, falling in love with studying his swing. With the emphasis being put on
As you can see, without projectile motion, gravity, and force tumbling would be virtually impossible. Projectile motion determines how the tumblers land on the ground. We need gravity to bring the tumblers back down to earth after performing impressive aerial skills. Force is very important because without it tumbles wouldn’t be able to do a cartwheel! If we didn’t have projectile motion,force, and gravity tumbling would be just a
(Melvin, Mangonel - “Physics of Catapults”) The speed and distance of the projectile depended on how much force the catapult applied to the projectile, and the momentum depended on the mass and the velocity of the projectile (dead diseased cow, or flaming
Firstly, before anything else is done, the mass of the ball needs to be calculated. Using the balance, and additional weights if necessary, find the mass of the ball. This will be in grams, so you need to convert that to kilograms. The conversion between grams and kilograms is: 1000g=1kg. The mass of our ball was 69.9g, 0.0696kg. After this is calculated, the height of the bob from the pointer to the table must be calculated and converted to meters. The conversion from centimeters to meters is 100cm=1m. The height of our bob was 12.7cm, .127m. Now we calculate the force of the bob by setting the ball in the bob, and spring back the gun to shoot it. Attempt this at least seven times and record the tooth number on the rack when the pendulum stops. After this, find the average
E=mc2; it is probably the most highly acknowledged physics formula to this day. Albert Einstein discovered it, and called it “The Theory of Relativity”. It means E (energy) equals (mass) times c2 (speed of light squared). The theory states that things will move at a slower pace and get smaller in length from the position of an observer on
Hooke’s Law states that the deformation of a body is proportional to the force applied on it. Since there is less elasticity in the collision between the foot and the ground of the runner the athlete must have a faster leg speed and therefore must have stronger leg muscles. Understanding elasticity and the physics behind it helps the runner be able to specialize their training and techniques to make them more successful. Understanding elasticity and Hooke’s Law is important to understanding cross country running and becoming a better runner. Physics not only shows us about the elasticity between the ground and the legs of the runner but also about the elastic collision that is made there. Each time the runner’s feet hit the ground an elastic collision is made where momentum is conserved. The runner pushes down on the earth and the earth pushes
Mechanical energy is the energy which is based on either motion or position of an object (Simmons n.d.). Mechanical energy is divided into two types, potential energy (EP) and kinetic energy (EK). Potential energy is the energy of an object based upon its position relative to another. There are many types of potential energy such as elastic and gravitational potential energy. One the most common types of potential energy, which is discussed in this topic, is gravitational potential energy (given by Ep = mgh). Due to this, gravitational potential energy is equal to the work done to move an object (W = Fs). Kinetic energy is the energy of a moving object, (Given by EK = ½mv2). Work done is the change in kinetic energy or the force times the displacement (W = Fs or W = ΔE). An important aspect of mechanical energy is known as the law of conservation of energy, which states that in a closed system that the total energy of that system will remain constant, as energy is not created or destroyed, rather it is changes from one form to another (Nave n.d.). In effects this means that in a system as a ball falls its gravitational potential energy is transferred to kinetic energy, until just before it hits the ground all the potential energy has transferred to kinetic energy. This is not a perfect system and energy will be lost in other forms such as heat, sound and light. But that will be negligible in this experiment.
All of these require energy, and energy is what physics is all about. There is kinetic energy, potential energy, conservation of energy, velocity, acceleration, mass, force, and gravity. Energy gives you the ability to do work. Energy is everywhere in nature
Kinetic energy can be defined as ”Energy possessed by an object due to its movement” is called kinetic energy. Every moving an object has kinetic energy. When ball is moving in air it has
Bungee Jumping is an extreme sport, it requires the participant to jump from a bridge, crane or other high place while secured at the ankles with a nylon-cased rubber band. From the mere sight of someone Bungee Jumping, one might assume that the act is very dangerous for obvious reasons, for example: The rope breaking - there’s nothing to save you down there, so why do so many people put their lives in a piece of elastic? Bungee Jumping relies on the restoring force of the elastic to protect the jumper from the fall below. Because of the Law of Conservation of Energy, the gravitational potential energy at the top of the jump is converted to elastic potential energy at the bottom of the jump.