Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §8.6 Force, Work, and Energy, #5 · Calculus · Applications of integrals
(a) A 120-lb person makes a scale go down … inches
(a) A 120-lb person makes a scale go down inches. How much work is done?
(b) If the same person goes inches down the stairs, how much potential energy is lost?
Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §8.6 Force, Work, and Energy, #5
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