I have to build a model for a science project using gears and pulleys. Simple 4th grade. I need help?
get some 10 pound weights and show how its easier to lift with more gears or pulleys than with less.

get some 10 pound weights and show how its easier to lift with more gears or pulleys than with less.
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MAKING PROGRESS! Welding stress cracks in subframe that holds the gears, belt pulleys and implement lifts. Now that I think about it- the cracks ...