work = m g h
= 63.9 * 9.81 * 0.16 * 135 Joules
power = work/time
here time = 5*60+40 seconds
Kjoules = Joules work/1000
food calories = KJoules *(1 Cal/4.1868 Kj)
In the Biomedical and Physical Sciences building at MSU there are 135 steps from the ground floor to the sixth floor. Each step is 16.0 cm tall. It takes 5 minutes and 40 seconds for a person with a mass of 63.9 kg to walk all the way up. How much work did the person do? What was the average power performed by the person during the walk?How many food Calories did the person burn during the walk? (1 Cal = 4.1868 kJ)
1 answer
1 answer