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Sat 15 Oct, 2011 05:48 pm
A 2000 N rock is obstructing your path as you race in the world famous amazon fancy car marathon .you have only 200 N of applied force available and a pry bar that is 2 m long. using calculations and appropriate diagrams show how you can remove this rock with the material at hand ?
@Rasha Ayad,
Moment arm on one side of a fulcrum is 10 times the moment arm on the other side of a fulcrum. Pry the rock up--crib after each incremental lift until it rolls.
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