Answer:
According to the question, the height of the stairs is
h = 10 m
And the work done to burn 5 kg of fat is
W = (5)(7000 × 103)(4.2)
W = 147 × 106 J
Therefore, the work done towards burning of fat in one trip can be written equal to
= mgh + 1/2 mgh
= 3/2 mgh
= (3/2)(60)(10)(10)
= 9 × 103 J
Therefore, 16.3 × 103 times is the number of trips required