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The energy required to perform work in a machine is typically sourced from a power input, which could be electricity, fuel, or some other form of energy input. This energy is converted by the machine into mechanical work through various mechanisms such as electrical motors, combustion engines, or hydraulic systems. The efficiency of the machine determines how much of the input energy is successfully converted into useful work output.
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What is the work input for a machine?
The work input for a machine is the amount of energy or force that is put into the machine in order to make it operate. It is the energy that is required to do work on the machine and make it perform its intended function.
Why will you never get more work out of a machine than you put into it?
This is known as the principle of conservation of energy, where the total amount of energy put into a machine is equal to the total amount of work the machine can output. Due to factors like friction and heat, some input energy is always lost, making it impossible to get more work out of the machine than what was initially put in.
What is a comparison of a machines work input and work output?
mechanical efficiency
Explain why the amount of work that a machine does is less than the amount put into the machine?
The amount of work that a machine does is less than the input work due to energy losses in the form of friction, heat, and inefficiencies in the machine's operation. These losses result in some of the input work being dissipated and not translating fully into useful output work performed by the machine.
Why is it impossible for a machine to give you more energy output than the amount of energy put into it?
It is impossible due to the principle of energy conservation, which states that energy cannot be created or destroyed, only transferred or transformed. Therefore, any machine or system will always output less energy than the amount of energy put into it. This limitation is known as the efficiency of the machine.
What is the work input for a machine?
The work input for a machine is the amount of energy or force that is put into the machine in order to make it operate. It is the energy that is required to do work on the machine and make it perform its intended function.
Why will you never get more work out of a machine than you put into it?
This is known as the principle of conservation of energy, where the total amount of energy put into a machine is equal to the total amount of work the machine can output. Due to factors like friction and heat, some input energy is always lost, making it impossible to get more work out of the machine than what was initially put in.
What is a comparison of a machines work input and work output?
mechanical efficiency
Why is the amount of that a machine does is less than the amount put into the machine?
In such a machine, the remaining energy is wasted to friction
Explain why the amount of work that a machine does is less than the amount put into the machine?
The amount of work that a machine does is less than the input work due to energy losses in the form of friction, heat, and inefficiencies in the machine's operation. These losses result in some of the input work being dissipated and not translating fully into useful output work performed by the machine.
Why is it impossible for a machine to give you more energy output than the amount of energy put into it?
It is impossible due to the principle of energy conservation, which states that energy cannot be created or destroyed, only transferred or transformed. Therefore, any machine or system will always output less energy than the amount of energy put into it. This limitation is known as the efficiency of the machine.
The comparison between output work imput work is?
Work input is how much work you put into a machine and work output is the work done by the machine according to how much work you put into it. You will never get more work out of a machine than you put into it. The efficiency of a machine is how much useful work you got out of the machine compared to how much you put in (expressed in a percent). Efficiency = Useful Work Output ÷ Work Input
Does the work you put into a machine the same work you get out?
No, due to factors such as friction, inefficiencies, and energy losses, the work you put into a machine is typically more than the work you get out. This difference is known as mechanical efficiency.
The amount of work you get from an engine divided by the energy you put into it?
Efficiency
What does efficiency tell you about a machine?
The efficiency of a machine tells you how much usefull energy it will put out compared to the amount of energy that's put in. The usefull output energy is usually less (never greater) then the input because of energy loss due to frictional heating. For example if 120 joules of energy or work is put into a lifting machine, you might only get out 110 joules of lifting work because 10 joules is lost to heat. The efficiency of the machine is then ; (110/120) x 100% = 91.7% . I think for most practical machines anything above 90% efficient is quite good. (The terms work & energy are used interchangebly here because work is a transfer of energy).
What work on a simple machine equals the output work the machine is said to be 100 efficient?
If a simple machine is 100% efficient, it means that the input work done on the machine is equal to the output work produced by the machine. In other words, all the energy put into the machine is completely converted into useful work without any energy being wasted.
If the blank work on a simple machine equals the output work the machine is said to be 100 efficient?
Yes, if the input work equals the output work, the machine is considered 100% efficient. This means that all the energy put into the machine is converted into useful work without any energy being wasted.
