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What is the work input for a machine?
The energy that is used to make the machine work.
Why is the work needed to operate a machine always more than the work done by the machine?
there is more work needed to operate a machine then the work the machine does its self is because the machine has to be told how to do things the right way. therefore people need to tell it how to do the correct thing. the more work the people do, the more work the machine does, so you could say its almost equal. ======================================== Very nice but, unfortunately, unclear on the concept. Instead of "work", let's say "energy". They're the same thing, but it might help me get the point across better. A machine can't 'make' energy. All the machine can do is take the energy you put into it, and change it to a more convenient form in order to do what you need done. But it turns out that you must always put more energy into the machine than the useful energy that comes out of it. That's because some of the energy is always lost in the process of operating the machine ... on account of friction, air resistance, unintended heating ... things like that. We do everything we can to make the loss as small as possible, so that we don't lose too much of the energy that we paid for. We do things like using grease, oil, and roller bearings to reduce friction between machine parts, using thicker wire in an electrical circuit to reduce its resistance, and streamlining cars and airplanes to reduce air resistance. We've learned to reduce the losses quite well, but we can never completely eliminate them.
What is needed to begin to work any machine?
force
Why can't the work done by a machine be greater than the work done on the machine?
Because work is the amount of energy transferred into or out of a system, not counting energy transferred by heat conduction.
Which type of machine machine changes the direction or amount of force needed to do work?
Simple
How does every simple machine make work easier?
By reducing the amount of energy needed to preform an action
What is the work input for a machine?
The energy that is used to make the machine work.
What work is input for a machine?
The energy that is used to make the machine work.
Why is the amount of work that comes out a little less than the force needed to make a machine work?
Because some of the energy (work) is converted to heat as the parts of the machine rub against each other.
What form of energy is needed making a sewing machine work?
kiran ben
What is needed to make things work or move?
Energy
Why is the work needed to operate a machine always more than the work done by the machine?
there is more work needed to operate a machine then the work the machine does its self is because the machine has to be told how to do things the right way. therefore people need to tell it how to do the correct thing. the more work the people do, the more work the machine does, so you could say its almost equal. ======================================== Very nice but, unfortunately, unclear on the concept. Instead of "work", let's say "energy". They're the same thing, but it might help me get the point across better. A machine can't 'make' energy. All the machine can do is take the energy you put into it, and change it to a more convenient form in order to do what you need done. But it turns out that you must always put more energy into the machine than the useful energy that comes out of it. That's because some of the energy is always lost in the process of operating the machine ... on account of friction, air resistance, unintended heating ... things like that. We do everything we can to make the loss as small as possible, so that we don't lose too much of the energy that we paid for. We do things like using grease, oil, and roller bearings to reduce friction between machine parts, using thicker wire in an electrical circuit to reduce its resistance, and streamlining cars and airplanes to reduce air resistance. We've learned to reduce the losses quite well, but we can never completely eliminate them.
How does energy conversion make a telephone a useful machine?
The conversion of energy from one form to another helps let the telephone have all the energy it needs to work.
How is energy transformed in a machine?
Its transformed into work!
What is needed to begin to work any machine?
force
Why can't the work done by a machine be greater than the work done on the machine?
Because work is the amount of energy transferred into or out of a system, not counting energy transferred by heat conduction.
Which type of machine machine changes the direction or amount of force needed to do work?
Simple
