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?
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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