Answer to Question #346214 in Physics for Esau

Question

In a common test for cardiac function (the “stress test”), the patient walks on an

inclined treadmill. Estimate the power required from a 75-kg patient when the

treadmill is sloping at an angle of 12° and the velocity is 3.1 km/h.

Answer 1

$$P=Fv=mgv\sin\theta \\ =75*9.8*(3.1\div3.6)*\sin12^\circ=132\:\rm W$$