A student of mass climbs a staircase and rises vertically by in each climb
PHYSICS · Subjective · AP · Physics 1: Algebra-based · Work Energy and Power · Work Energy and Power
Problem
A student of mass 60kg climbs a staircase and rises vertically by 5.0m in each climb.
(i) Calculate the mechanical work done by the student in one climb.
(ii) Express your answer in kilojoules.
(iii) Convert this work into food calories (1kcal=4.186kJ).
(iv) A chocolate bar supplies 200kcal of energy. Estimate how many such climbs would use up the energy obtained from one chocolate bar.