Respuesta :
The work done against gravity by the student is 2,352 J.
Work done
The work done on an object is the product of applied force and the displacement of the object.
The given parameters:
- Mass of the student, m = 60 kg
- Vertical distance, h = 4 m
- Time of climb, t = 8 s
The work done against gravity by the student is calculated as follows;
W = P.E = mgh
W = 60 x 9.8 x 4
W = 2,352 J
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