problem07_51

University Physics with Modern Physics with Mastering Physics (11th Edition)

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7.51: 2 2 other 1 1 U K W U K + = + + Point 1 is where he steps off the platform and point 2 is where he is stopped by the cord. Let 0 = y at point 2. , kx W y 2 2 1 other 1 m. 0 . 41 - = = where m 0 . 11 = x is the amount the cord is stretched at point 2.The cord does negative work.
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Unformatted text preview: , U K K 2 2 1 = = = so 2 2 1 1 =-kx mgy and . N/m 631 = k Now apply kx F = to the test pulls: kx F = so . m 602 . = = k F x...
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