Question

How many grams of butter, which has a usable energy content

Answer 1

Answer:

$m_{butter} = 156.93 grams$

Explanation:

Given data;

energy content  = 6.0 Cal/g = 6000 cal/g

mass of man 60 kg

climb height = 6.70 km

g = 9.80 m/s^2

we know that

potential energy = mgh

$E_t = mU$

wehre U - usable energy constant

equating both energy

$60 \times 9.8 \times 6.70\times 10^3 = m_{butter} 6000\times \frac{4.184 j}{cal}$

$m_{butter} = 156.93 grams$