We now let the yo-yo fall like a yo-yo, so it goes the same distance but also spins. So, once again, we use energy conservation. The KE of the yo-yo will now be divided into two halves (i.e., due to the rotation around the center of mass and due to the translation of the center of mass). Since they are equal in magnitude but opposite in direction, the net change in their total value is zero, and therefore no change in the system's total energy occurs.
It is also forced to spin since the string is attached to your finger and wrapped around the axle of the yo-yo. As it falls, the yo-potential yo's energy transforms into kinetic energy, or motion energy. That is why modern yo-yos may "sleep," or continue spinning at the end of their string. This is different from traditional toy yo-yos which do not have a string length sufficient to allow them to sleep.
Traditional Japanese toy yoyos are sometimes called "nishikigo" which means "stringed ball." They are usually made out of metal (usually silver or gold) and decorated with enamel paint. Modern Japanese yoyos are usually made out of plastic and contain small electric motors that allow them to spin for a longer time before running out of power. These modern yoyos are called "machi-nuki" which means "electric balls."
In conclusion, yes, you can spin traditional Japanese yoyos up side down!
Expert Approved Answer When I apply force to a yoyo, the kinetic energy is transformed to potential energy. However, if I just let the remainder of the things fall from wherever they may, the potential energy will be transformed to kinetic energy. So, in conclusion, when I apply force to a yoyo, it acts as a brake and slows down time.
Expression for the law of energy conservation K1+U1+Wother=K2+U2. Here K, U and W represent the quantities of kinetic energy, potential energy and heat energy, respectively. Thus the law of energy conservation can be expressed as a single equation with three variables (kinetic energy, potential energy and heat energy). The law of conservation of energy finds its expression in many forms by different scientists. For example, Joseph Louis Lagrange came up with this formula while trying to solve problems related to collisions between moving bodies.
The law of conservation of energy is one of the four laws of physics discovered by James Joule. The others are the law of conservation of matter, the law of action and reaction and the law of universal attraction or gravitation.
Energy is said to be conserved if its total value doesn't change over time. If some of the parts of the energy change state then it is called energy loss/gain. Energy can be lost through radiation, conversion into another form of energy or materialization at a lower temperature. It can also be gained back when needed. Energy cannot be created or destroyed but only changed from one form to another.
The kinetic energy of a YOYO is given by E = m * dv2/dt2. If we assume that the mass is constant, then the amount of energy that it contains at any one time is equal to m * dv2/dttime. Therefore, the energy of a YOYO is constant and depends on how fast it spins.
When a YOYO is spinning very quickly, it can spin for a very long time without running out of energy. But eventually it will stop spinning because there is no force keeping it up in the air!
YOYOs are good for games because they don't last too long. The more realistic ones do cost money though!
Because a machine cannot do more work than the energy it consumes, energy is nevertheless saved in these devices. Machines, on the other hand, can lower the amount of input force required to complete the task. The mechanical advantage of any basic machine is the ratio of output to input force magnitudes (MA). Because output force is proportional to input force times MA, energy is necessarily conserved because there is always less output force than input force.
In most machines, energy is also conserved because work is done on one or more external forces. For example, when you lift a weight with a pulley system, you are applying force to the rope which is being pulled by gravity. Rope strain energy is converted into kinetic energy of the weight, which is then used to do work on another object. Energy is thus transformed from one form to another with no loss of value.
In addition to using external forces for energy transference, many machines exploit the physical properties of materials. For example, a rocker arm operates based on the principle of inertia. As the arm swings back and forth, it uses momentum acquired from a single input motion (the oscillating engine cam) to perform multiple tasks (turning the wheels). This mechanism is known as a "redundant unit". In such cases, energy is transmitted from component to component without touching them together. Energy is thus transferred indirectly, through several different paths, with no loss of value.
Because the rule of conservation of energy asserts that energy is always preserved in the cosmos and just changes form, various energy transformations occur on a continuous basis. To move, our bodies transform chemical energy from food into mechanical and electrical energy. In doing so, they maintain a constant temperature. The sun's energy is transformed into heat energy which then becomes kinetic energy as it moves Earth around its orbit. This is why solar energy is said to be the most abundant source of energy in the universe.
Energy can also be transformed from one form to another. For example, electricity is a form of energy and it can be transformed into other forms of energy such as heat or mechanical force. Energy cannot be created or destroyed, but it can change form. Thus, energy is very important because it is needed for any type of activity. It is also important because we need ways to transmit and store it so that it can be used when and where it is needed.
Energy has many different names depending on who you talk to. It could be called fuel, power, drive, momentum, or light. It may be seen as a commodity or a resource. It may even be considered something mystical! However, no matter what name you give it, energy is responsible for anything that happens or exists needs energy to exist or happen. Without energy, nothing would ever grow nor would it be able to sustain itself.