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A machine decreases the amount of force needed to work, as it distributes the force throughout a larger distance.
A Machine is something that helps do work. Work, in mechanics, is the amount of energy output over a distance. A force is what does the work, so a force acting over a distance does work...which is what machines help do. Further, the amount of time that a force takes to do work will determine the POWER output.
Distance is measured in meters
A machine exerts a great amount of energy. This is because machines are meant to do things that are often difficult or time consuming quickly and efficiently.
No machine is 100% efficient. The amount of work you get out of the machine is always something less than the amount of work you put into it. So you have to put in more work than the job actually requires. It's the price you pay for making the job 'easier' by using the machine to do it.
A machine decreases the amount of force needed to work, as it distributes the force throughout a larger distance.
A Machine is something that helps do work. Work, in mechanics, is the amount of energy output over a distance. A force is what does the work, so a force acting over a distance does work...which is what machines help do. Further, the amount of time that a force takes to do work will determine the POWER output.
Distance is measured in meters
A machine makes work easier by changing the amount of force you exert, the distance over which you exert your force, or the direction in which you exert your force.
Power is the amount of work a specific machine can do over a period of time. Work is the product of force and the distance an object travels as a result of that force. A more powerful machine can effect changes in velocity of an object more rapidly than a less powerful machine.
A machine makes work easier by changing at least one of three factors. A machine may change the amount of force you exert, the distance over which you exert your force, or direction in which you exert your force.
machines make work easier by cahnging the amount of force exerted, and changing the distance and derection of the force
Because machines allow force to be applied over a greater distance.
Gold Medal machines provides popcorn machines, and can be purchased for a reasonable amount of money. The machines can be found at http://www.gmpopcorn.com/.
Because the action requires the same amount of force.
A machine exerts a great amount of energy. This is because machines are meant to do things that are often difficult or time consuming quickly and efficiently.
No machine is 100% efficient. The amount of work you get out of the machine is always something less than the amount of work you put into it. So you have to put in more work than the job actually requires. It's the price you pay for making the job 'easier' by using the machine to do it.