Electric Motor

On a larger scale, the example of a Lego made motors efficiency can relate to that of a modern day car and the efficiency / energy waste that comes from it. The internal combustion engine is an engine in which the combustion of a fossil fuel mixes with air in a chamber of the operational fluid flow circuit.

| Jonathan Archer and Zefrem Cochrane are employees of the Rugged Trucks Company, a light truck division of Gigantic Motors Corporation.

III. Now that I have explained the equipment and some basic fundamentals, I am going to tell you about a

The purpose of this experiment was to investigate the effects of different masses hoisted by an electric motor from ground level to a height of 1.29 m. The main purpose was to look how a change in mass affected the efficiency of our motor, but it did affect other variables such as power, current, force, etc. For this experiment, our hypnosis is that as mass increases, the efficiency increases. Because in the equation for efficiency, efficiency=gain in potential differenceelectrical energy used, gain in potential difference = mgh, the mass of an object has a direct relationship with the efficiency of the motor. In this equation, we see that efficiency is affected by the mass that is lifted, gravity, the height the mass is being lifted, and the amount of energy that is put into the system. We can see that mass, gravity, and height has a direct relationship while inputted power has an inverse relationship with efficiency.

In this conversion, some energy is lost to friction. To get the calculated efficiency, work out and in is needed. The force stretched for the mousetrap car .5 Newtons. The levor arm is 3 meters long. First the angular speed is needed, the group got 17 revolutions in 1.87 seconds, for the work out. And converted this to radians per seconds. Then the group found the work in and converted to radians per seconds, as well. Then the torque out and in was needed. To get the torque, it is force times the levor. Power out and in is also needed, torque times work. After everything is calculated , divide power out by power in and mulitply by 100, to get a percentage. This is the efficiency for the mouse trap

preferred mileage over the greater V8. All motors are accessible with 4-wheel drive (4WD) rather than the

3. Perform ten resistance training exercises and describe which phase of the exercise is the eccentric, concentric and isometric phase of the movement. At which phase is the muscle the strongest? Why?

1. Consider eight two-cubic centimeter (2 cm3) sugar cubes stacked so that they form a single 2 x 2 x 2 cube. How does the surface area of the single, large cube compare to the total surface area of the individual eight cubes? Report your answer as a ratio. Be sure to show all calculations leading to an answer.

i. (If you look at the graph for Problems 16, 17, and 18, it’s at point A.)

How is the speed of an object related to the shape of the graph? (1)

7. Which of the following must be true if a firm is experiencing economies of scale?

20. Efficiency means producing _______ using the least amount of A. goods; resources. B. human resources; time. C. capital; natural items. D. entrepreneurship; people.

Overall fuel efficiency is up too. The first generation Volt achieved 37 mpg. The second generation model is EPA-rated at 42 mpg. Where the first generation model required premium fuel, the all-new Volt takes regular grade gasoline. That alone will enable customers to save at least 10 percent at the

These types of engines can be found not only in cars and trucks, but in boats, lawn mowers and generators to name a few.

As for the second design, low frequency excitations are present due to the worker’s motion including walking and contraction and expansion of his muscles. These low excitation motion can provide viable amounts of wasted mechanical energy that can be converted to power many critical devices including sensors for oxygen monitoring, pacemakers, defibrillators, cell phones, and wireless sensors and actuators. A significant impediment in the