A student eats a breakfast consisting of two bowls of cereal
and milk, containing a total of 3.20 x 102 Calories of energy.
He wishes to do an equivalent amount of work in the gymnasium
by doing curls with a 25.0-kg barbell.
• How many times must he raise the weight to expend that much
energy? Assume that he raises it through a vertical displacement
of 0.400 m each time, the distance from his lap to his upper
chest