8. What unit of power is equal to 746 watts? The unit power is equal to 764 watts is one horsepower (1, Hp).

9. Using your answer to the previous question and slide 28, identify how many joules of energy can be produced by a horse every second?

Answer questions 10-12 based on the following:
It requires a vertical force of 2450 N to raise a crane 120 m in 3 minutes.
10. How much work is done?

11. How much power is produced?

12. What is the mass of the crane?