Question

A 75 kg person climbs the 248 steps to the top of the Cape Hatteras lighthouse, a total climb of 59 m. How many Calories does he or she burn

Answer 1

W = 41.45 Kcal

Step-by-step explanation:

Given that,

The mass of a person, m = 75 kg

He climbs 248 steps to the top of the Cape Hatteras lighthouse, a total climb of 59 m.

We need to find how many calories does he or she burn.

Work done = Fd

d is displacement

⇒ W = 75 ×9.8 ×59

= 43365 J

Let the efficiency is 0.25.

`W=(43365)/(0.25)\\\\=173460\ J\\\\\text{or}\\\\=41.45\ kcal`

So, 41.45 Kcal is burned by the person.