Each time he does one pushup, Jose, who has a mass of 61kg, raises his center of mass by 25 cm. He completes an impressive set of 150 pushups in 5 minutes, exercising at a steady rate.

Question

Part A

If we assume that lowering his body has no energetic cost, what is his metabolic power during this workout?

Part B

In fact, it costs Jose a certain amount of energy to lower his body-about half of what it costs to raise it. If you include this in your calculation, what is his metabolic power?

Express your answer with the appropriate units.

Answer 1

power = weight*distance / time