Question
(a) How much gravitational potential energy (relative to the ground on which it is built) is stored in the Great Pyramid of Cheops, given that its mass is about $7 \times 10^9 \textrm{ kg}$ and its center of mass is 36.5 m above the surrounding ground? (b) How does this energy compare with the daily food intake of a person?

a) $3. \times 10^{12} \textrm{ J}$

b) $2 \times 10^5 \textrm{ person days}$

Solution Video