Mechanical energy helps humans perform manual tasks in an easier and more efficient manner, explains the Physics Classroom. Benefits of mechanical energy are evident in construction projects, in which many of the activities involve machines lifting heavy objects and cutting materials into smaller pieces. Using mechanical energy also has drawbacks, one of which is that machines and equipment require maintenance to keep them in working order.Know More
Mechanical energy may be defined as a form of energy that relates to the position and movement of an object. This form of energy is classified into two categories. The first classification is potential energy, which is a form of stored energy based on an object's position in space. The second category is kinetic energy, defined as the energy generated as a result of the object's motion. These two classifications may also define mechanical energy as the ability to do work.
Mechanical energy is useful in manual activities, turning them into machine-driven work. A simple example of using mechanical energy is utilizing a hammer to drive a nail through a piece of wood. As the hammer is swung in the direction of the nail, the tool's kinetic energy applies a certain magnitude of force onto the nail, causing the latter to be thrust further into the wood.
In practical applications, the advantages of mechanical energy are highlighted in its ability to prevent human beings from doing manual jobs. Uses of mechanical energy in everyday life are found in elevator operation, rotating propellers in turbines on wind farms, and throwing a bowling ball for a possible strike.
Other drawbacks of using mechanical energy are that using mechanical energy for transport of fluids across long distances may create friction and heat energy that may destroy the carrier lines, and that in some cases, using machines to do simple manual tasks might be more expensive in the long run than relying on raw human power.Learn more about Physics
Oil is an abundant and relatively inexpensive fuel used to power automobiles, airplanes and other forms of transportation, but it poses significant environmental threats as well. Oil is one of the most abundant sources of energy on earth: it is found across the world, including at on and offshore locations in the United States. It is cheap and easy to manage and transport but is also classified as a finite or nonrenewable energy source and may harm species and habitats in the event of oil spills.Full Answer >
While energy drinks can provide a quick boost of energy for people who have been working too hard or are fatigued, they have some negative effects on the body that should not be ignored. Cardiovascular problems and potential weight gain are among the disadvantages to energy drinks, according to HealthResearchFunding.org.Full Answer >
The advantages of solar power include the energy independence it bestows on its users, quiet energy production, the lack of negative effects on the environment, and its overall cost. On the other hand, the high initial cost and its dependence on clear weather serve as deterrents to widespread adoption.Full Answer >
Renewable energy sources do not emit carbon emissions, and these energy sources provide jobs and benefits to economies, according to the Union of Concerned Scientists. The disadvantages of renewable energy include high investment costs, and the energy output for certain renewable energy sources varies on location or weather. Renewable technologies are cost-competitive, but there are hidden costs that include displacement and environmental pollution.Full Answer >