A 75.0-kg firefighter climbs a flight of stairs 28.0 m high. How much work does he do?
Work done by a firefighter.
Answer to Problem 1P
Solution:
20580 J
Explanation of Solution
First, force can be calculated which is needed to apply on a flight than work done by the firefighter.
Given:
Mass of the firefighter, m=75 Kg. The height of stairs, h= 28 m.
The formula used:
Where “F” is the Force required to climb the stairs
“m” is the mass of the firefighter
“a” is the acceleration or gravity force (9.8 m/s2)
Where “F” is the Force required to climb the stairs
“W” is the work done by the firefighter
“d” is the height.
Calculation:
Force required to climbing the stairs
---------------(1)
Work done by the firefighter
-------------------(2)
By using equation (1)and (2)
Chapter 6 Solutions
Physics: Principles with Applications
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