W = m*g*h = work done in joules
- m = 20, g = 10 m/s/s, h = 1 m ==> for one repetition
- $$W = 20*10*1 = 200$$
- Workout is for 4 minutes which equals 240 seconds
- Every second we do two-thirds of a repetition
- $$Repetitions = (\frac{2}{3}) 240 = 160 $$
- $$joules = 200 * 160 = 32000 $$
- There are 4200 joules in a calorie.
- $$calories = \frac{32000.0}{4200.0} = 7.6 $$
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