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

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6.37: The work done in any interval is the area under the curve, easily calculated when the areas are unions of triangles and rectangles. a) The area under the trapezoid is J 0 . 4 m N 0 . 4 = . b) No force is applied in this interval, so the work done is zero. c) The area of the triangle is
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Unformatted text preview: J . 1 m N . 1 = ⋅ , and since the curve is below the axis ) ( < x F , the work is negative, or J . 1-. d) The net work is the sum of the results of parts (a), (b) and (c), 3.0 J. (e) J . 1 J 2 J . 1-=-+ . ....
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