An airplane is not a simple machine. A lever is a simple
machine. A wheel is a simple machine. Any machine that can be
described by a mathematical formula is a simple machine.
An airplane is not a simple machine. A lever is a simple
machine. A wheel is a simple machine. Any machine that can be
described by a mathematical formula is a simple machine.
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A pulley isn't a kind of simple machine, it is a simple machine
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simple machine
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simple machine
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Its a simple machine which can crush any complex machine