It is hard to lift a heavy load, but by using a pulley you need less force to lift the heavy load.
We had a lot of fun this morning exploring how to lift loads with a pulley.
We found out that:
You pull down on one end, you have weight on the other end. Then the weight will go up. Luke G
A pulley needs a simple machine called a wheel and an axle. Layla
A pulley has 3 wheels at the top. It takes less force to pull it down. Jenaya
The more wheels you have the easier it will be to pull something heavy up. Isaac
A type of machine that helps you lift something heavier. You need less force to lift it. Maidah
The pulley uses less force. Layla
When we watched a video about pulleys we also found out that although it takes less force to lift an object with a pulley it does take longer.
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