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A machine for lifting heavy objects?

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Relevant answers:

Simple machines for lifting heavy objects?
A pulley is the best way.
When lifting heavy objects you should?
Bend your knees.
Should you be lifting heavy objects with ddd?
I think the author may have intended to say DDD, or Degenerative Disc Disease. I too would like to know the answer to that question. If you're using this as an excuse then no you shouldn't lift heavy...
What is the advantage for lifting a large heavy object with an inclined plane?
The force required to lift the object is much less than otherwise.One might see this surprising. How the use of a ramp can decrease the force required to lift an object?The answer is that the...
Can lifting heavy objects make your head hurt?
yes

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