Asked by: Wiebke Walkowitz
business and finance mechanical and industrial engineering industry

What is happening when machines lose energy due to friction?

22
The more mechanical energy is lost in thetransfer to other forms of energy, the less efficient themachine. Machines lose some energy in the formof heat due to friction. The more moving parts amachine has, the more energy it loses tofriction because the parts rub together.


Likewise, people ask, can make machines more efficient by reducing friction?

Machine Efficiency The output work is always less than the input workbecause some of the input work is used to overcomefriction. Therefore, efficiency is always less than100 percent. The closer to 100 percent a machine'sefficiency is, the better it is at reducingfriction.

Similarly, why can't perpetual motion machines work? A perpetual motion machine of the first kindproduces work without the input of energy. It thus violatesthe first law of thermodynamics: the law of conservation of energy.This conversion of heat into useful work, without any sideeffect, is impossible, according to the second law ofthermodynamics.

Also question is, can machines increase energy?

A machine cannot increase the amount ofenergy you put into it. In most cases, a simplemachine is used to reduce the amount of force you must exertto do work. The down side is that you must exert the forceover a greater distance, because the product of force and distance,fd, (which equals work) does not change.

How do machines change the way work is done?

They just change how the work is done.Machines make work easier by increasing the amount offorce that is applied, increasing the distance over which the forceis applied, or changing the direction in which the force isapplied. A: The machine must apply the force over a shorterdistance.

Related Question Answers

Nouhou Jitin

Professional

What are the 7 simple machines?

What is a simple machine?
  • Lever.
  • Wheel and axle.
  • Pulley.
  • Inclined plane.
  • Wedge.
  • Screw.

Branden Farraces

Professional

What are 10 simple machines?

Simple Machines: Facts
  • The Lever. The lever is a long tool such as a pole or a rod putunder an object to lift it.
  • The Wheel & Axle. The wheel has always been considered amajor invention in the history of mankind.
  • The Inclined Plane. The inclined plane is simply a ramp.
  • The Wedge.
  • The Pulley.
  • The Screw.
  • Compound Machines.

Julietta Clarisse

Professional

What are the 3 types of pulleys?

There are three main types of pulleys:fixed, movable, and compound. A fixed pulley's wheel andaxle stay in one place. A good example of a fixed pulley isa flag pole: When you pull down on the rope, the direction of forceis redirected by the pulley, and you raise theflag.

Aisatou Tanasescu

Explainer

What are some possible reasons that the efficiency is never 100?

Compound machines have low mechanical efficienciesbecause they have more moving parts and thus more friction toovercome. Machines are not 100% efficient becausesome of the work done by a machine is used to overcomefriction. So work output is always less than workinput.

Crisostoma Jegu

Explainer

Which machine efficiency is impossible?

A simple machine, such as a lever, pulley, orgear train, is "ideal" if the power input is equal to the poweroutput of the device, which means there are no losses. In thiscase, the mechanical efficiency is 100%.

Jacki Wille

Explainer

What is ideal mechanical advantage?

Ideal Mechanical Advantage
Because a certain amount of the input force is neededto overcome friction, and this amount is unknown, it can bedifficult to measure actual mechanical advantage. Theideal mechanical advantage, on the other hand, is simply theratio of the input distance DI to the output distanceDO.

Shuping Zhmakov

Pundit

How Can machines be more efficient?

Machine Efficiency
The output work is always less than the input workbecause some of the input work is used to overcome friction.Therefore, efficiency is always less than 100 percent. Thecloser to 100 percent a machine's efficiency is, the betterit is at reducing friction.

Jenell Gorsun

Pundit

How is mechanical advantage calculated?

Calculate the mechanical advantage of alever. In the previous chapter, you learnt that you cancalculate a quantity to say exactly how big or smallthemechanical advantage is. This quantity is a ratio.It iscalculated by dividing the output force by the input force.A ratio of 1 to 4 is written as 1:4.

Isak Roos

Pundit

How do machines lose energy?

The more mechanical energy is lost in thetransfer to other forms of energy, the less efficient themachine. Machines lose some energy in the formof heat due to friction. The more moving parts a machinehas, the more energy it loses to friction because theparts rub together.

Kaley Piedrabuena

Pundit

What sort of energy do machines use to do work?

Simple machines are often used to multiplythe amount of the initial effort exerted or to change the directionof a force. Simple machines using kinetic energyinclude the lever, pulley, inclined plane and the wheel andaxle.

Victor Schillig

Pundit

What is the law of conservation of energy state?

In physics and chemistry, the law of conservation ofenergy states that the total energy of an isolatedsystem remains constant; it is said to be conserved over time. Thislaw means that energy can neither be created nordestroyed; rather, it can only be transformed or transferred fromone form to another.

Uarda Drossel

Teacher

How is work calculated in simple machines?

Simple machines make work easier bymultiplying, reducing, or changing the direction of a force. Thescientific formula for work is w = f x d, or, work isequal to force multiplied by distance. Simple machinescannot change the amount of work done, but they can reducethe effort force that is required to do thework!

Dionis Sehn

Supporter

Is perpetual motion possible in a vacuum?

Is perpetual motion impossible even in avacuum according to the modern laws of physics? It is notjust that you need a perfect vacuum. It's that you need asystem that is completely (100.0000%) isolated from any interactionwith the containing system, and this is impossible.

Bridgett Zweiniger

Supporter

Can you use magnets for perpetual motion?

Magnets can indeed be used to create perpetualmotion. No they can't. Perpetual motion violatesthe 2nd law of thermodynamics. The only hole is that this isn't aperpetual motion machine, it's solar power.

Janyce Neerja

Supporter

Is the earth a perpetual motion machine?

Perpetual motion requires an initial force and asustaining force.” As it turns out, the moon is very nearly aperpetual motion machine. It goes around the earthevery month and has been doing so at almost constant speed for avery long time.

Gurinder Vivo

Beginner

Who invented perpetual motion?

Early designs of perpetual motion machines weredone by Indian mathematician–astronomer Bhaskara II, whodescribed a wheel (Bhāskara's wheel) that he claimed would runforever. A drawing of a perpetual motion machine appeared inthe sketchbook of Villard de Honnecourt, a 13th-century Frenchmaster mason and architect.

Hedi Balseca

Beginner

What is perpetual motion machine of second kind?

Perpetual motion machine of the secondkind is a machine which produces work from a single heatsource. This kind of machine is impossible, since itviolates the Second law of thermodynamics.

Donelia Volpato

Beginner

Can you patent a perpetual motion machine?

Allegedly, by patenting different parts of it -because patent offices do not accept claims forperpetual motion machines. Then, by assembling them, itwill have a patented energy generator. The machine,though, isn't a reactor.

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13th May, 2021

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