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A car is stuck in the mud. To set it out; the driver ties one end of a rope to the car and the other end to a tree 100 ft away. He then pulls sideways on the rope at its midpoint. If he exerts a force of 120 lb. how much force is applied to the car when he has pulled the rope 5 ft to one side? 6. Two strings support a lamp weighing 12 lb. ................
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