A man whose mass is 100kg walks up the third floor of a building which is 12-m high relative from the ground. by how many joules has the man exerted work? by how much has the potential increased? If the man climbs the stairs in 25 s, find man’s rate of work in horsepower.

College Physics
11th Edition
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Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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  1. A man whose mass is 100kg walks up the third floor of a building which is 12-m high relative from the ground.
    1. by how many joules has the man exerted work?
    2. by how much has the potential increased?
    3. If the man climbs the stairs in 25 s, find man’s rate of work in horsepower.
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