How Do The Following Variables Affect How Much Energy Is Transferred To The Nail?

Mechanical Energy

In a previous part of Lesson 1, it was said that piece of work is washed upon an object whenever a forcefulness acts upon it to crusade information technology to be displaced. Work involves a force acting upon an object to cause a displacement. In all instances in which work is done, at that place is an object that supplies the strength in order to do the work. If a World Civilization volume is lifted to the top shelf of a pupil locker, and so the educatee supplies the strength to do the work on the volume. If a plow is displaced across a field, and then some form of farm equipment (commonly a tractor or a horse) supplies the force to exercise the work on the plow. If a pitcher winds upwards and accelerates a baseball towards domicile plate, then the pitcher supplies the force to exercise the piece of work on the baseball. If a roller coaster car is displaced from basis level to the superlative of the first drib of a roller coaster ride, then a concatenation driven by a motor supplies the force to do the piece of work on the car. If a barbell is displaced from footing level to a superlative above a weightlifter'southward head, then the weightlifter is supplying a force to do work on the barbell. In all instances, an object that possesses some course of free energy supplies the force to do the piece of work. In the instances described hither, the objects doing the piece of work (a student, a tractor, a pitcher, a motor/concatenation) possess chemical potential energy stored in food or fuel that is transformed into work. In the process of doing work, the object that is doing the work exchanges energy with the object upon which the piece of work is done. When the work is done upon the object, that object gains energy. The free energy acquired by the objects upon which work is done is known as mechanical energy .

Mechanical energy is the energy that is possessed by an object due to its motion or due to its position. Mechanical energy can be either kinetic energy (energy of motion) or potential energy (stored free energy of position). Objects have mechanical free energy if they are in move and/or if they are at some position relative to a aught potential energy position (for example, a brick held at a vertical position above the ground or zero height position). A moving car possesses mechanical energy due to its move (kinetic energy). A moving baseball possesses mechanical energy due to both its high speed (kinetic energy) and its vertical position to a higher place the ground (gravitational potential free energy). A World Civilization book at rest on the summit shelf of a locker possesses mechanical energy due to its vertical position in a higher place the ground (gravitational potential energy). A barbell lifted high to a higher place a weightlifter'southward head possesses mechanical free energy due to its vertical position to a higher place the ground (gravitational potential energy). A drawn bow possesses mechanical free energy due to its stretched position (elastic potential energy).

Mechanical Energy every bit the Power to Practise Piece of work

An object that possesses mechanical free energy is able to do piece of work. In fact, mechanical energy is often defined as the power to do work. Any object that possesses mechanical energy - whether it is in the form of potential energy or kinetic energy - is able to exercise piece of work. That is, its mechanical energy enables that object to utilize a force to another object in social club to cause it to be displaced.

Numerous examples tin can be given of how an object with mechanical free energy tin harness that free energy in club to apply a forcefulness to cause another object to be displaced. A classic instance involves the massive wrecking brawl of a demolition machine. The wrecking ball is a massive object that is swung backwards to a high position and allowed to swing forward into building structure or other object in order to annihilate it. Upon hitting the structure, the wrecking ball applies a force to it in guild to cause the wall of the structure to be displaced. The diagram beneath depicts the process by which the mechanical energy of a wrecking ball can be used to do work.

A hammer is a tool that utilizes mechanical energy to practise work. The mechanical free energy of a hammer gives the hammer its power to apply a force to a nail in order to cause it to be displaced. Because the hammer has mechanical free energy (in the form of kinetic energy), it is able to exercise work on the nail. Mechanical energy is the ability to practise work.

Another instance that illustrates how mechanical free energy is the power of an object to do piece of work can be seen any evening at your local bowling alley. The mechanical free energy of a bowling ball gives the ball the ability to apply a force to a bowling pin in order to cause it to be displaced. Because the massive ball has mechanical energy (in the class of kinetic free energy), information technology is able to do work on the pin. Mechanical energy is the ability to exercise work.

A dart gun is yet another instance of how mechanical energy of an object can do work on some other object. When a sprint gun is loaded and the springs are compressed, it possesses mechanical free energy. The mechanical energy of the compressed springs gives the springs the ability to apply a strength to the dart in guild to cause it to be displaced. Because of the springs have mechanical free energy (in the class of elastic potential energy), information technology is able to practise work on the dart. Mechanical energy is the ability to exercise work.

A common scene in some parts of the countryside is a "wind farm." High-speed winds are used to do work on the blades of a turbine at the so-called wind farm. The mechanical energy of the moving air gives the air particles the power to apply a forcefulness and crusade a displacement of the blades. Every bit the blades spin, their energy is after converted into electric energy (a non-mechanical form of energy) and supplied to homes and industries in order to run electrical appliances. Because the moving wind has mechanical free energy (in the form of kinetic energy), information technology is able to do work on the blades. Once more than, mechanical energy is the ability to do work.

The Total Mechanical Energy

As already mentioned, the mechanical energy of an object can exist the result of its movement (i.eastward., kinetic energy) and/or the event of its stored free energy of position (i.due east., potential energy). The total corporeality of mechanical energy is only the sum of the potential energy and the kinetic energy. This sum is but referred to as the full mechanical free energy (abbreviated TME).

TME = PE + KE

Equally discussed before, at that place are 2 forms of potential free energy discussed in our course - gravitational potential energy and rubberband potential energy. Given this fact, the above equation can exist rewritten:

TME = PE_grav + PE_bound + KE

The diagram below depicts the motion of Lee Ben Fardest (esteemed American ski jumper) equally he glides downward the hill and makes one of his record-setting jumps.

The total mechanical free energy of Lee Ben Fardest is the sum of the potential and kinetic energies. The two forms of energy sum up to 50 000 Joules. Find likewise that the full mechanical energy of Lee Ben Fardest is a constant value throughout his motion. There are conditions under which the total mechanical free energy will be a constant value and conditions under which it volition exist a changing value. This is the subject field of Lesson ii - the work-energy human relationship. For now, merely retrieve that total mechanical energy is the energy possessed by an object due to either its motility or its stored energy of position. The total amount of mechanical energy is only the sum of these two forms of energy. And finally, an object with mechanical free energy is able to do work on some other object.

Source: https://www.physicsclassroom.com/class/energy/Lesson-1/Mechanical-Energy

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