In the diagram shown above, the spring is very stiff and can be stretched 1 inch by a pulling force of 100 pounds. How much force must be applied to the block in order to move the box 3.5 inches to the left?
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350 pounds.
150 pounds.
250 pounds.
450 pounds.
Detailed Explanation
3.5 inches multiplied by 100 pounds per inch equals 350 pounds.
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