Wednesday, September 7, 2011

Common Misconceptions in Physical Science: Force


Isabelle hurt her ankle while climbing in the mountains. To get to the road, her friends had to get her up a steep cliff. They have one long rope and one pulley. Her friend's discussed the easiest way to pull Isabelle up the cliff. This is what they said:

Jace: "We should tie the rope around Isabelle and pull her up to the road."

Penn: "We should tie the pulley to a tree at the top of the cliff and then pull the rope down through the pulley."

Zoey: "We should tie the pulley to Isabelle. Then we should tie one end of the rope to a tree at the top of the cliff and pull the rope up through the pulley."


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