In Exercises use Hookes Law to determine the variable force in the spring problem. An overhead garage
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In Exercises use Hooke’s Law to determine the variable force in the spring problem.
An overhead garage door has two springs, one on each side of the door. A force of 15 pounds is required to stretch each spring 1 foot. Because of the pulley system, the springs stretch only one-half the distance the door travels. The door moves a total of 8 feet, and the springs are at their natural length when the door is open. Find the work done by the pair of springs.
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