Friday
November 28, 2014

Homework Help: Physics

Posted by Mike on Sunday, February 27, 2011 at 10:11am.

Karen has a mass of 52.7 kg as she rides
the up escalator at Woodley Park Station of the Washington D.C. Metro. Karen rode a
distance of 57.5 m, the longest escalator in the free world. The acceleration of gravity is 9.8 m/s2 . How much work did the escalator do on
Karen if it has an inclination of 26.7?
Answer in units of J

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