If you pull down on the rope, the load lifts up.
Using a double pulley makes lifting easier than with a single pulley.
Using a pulley saves your back
Less effort is needed to lift the bucket of sand
Lifting the sand by hand means you lift the bucket up, but when you use apulley you pull down.
Pulleys change the direction of the force.
The length of the rope determines the amount of force needed.
Wow! Great learning guys. I'm proud of you all!
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