The stair stepper is a novel exercise machine that attempts to reproduce the work done against gravity by walking up stairs. With each step, Brad (of mass 60 kg) simulates stepping up a vertical distance of 0.2 m with this machine. If Brad exercises for 13 min per day with a stair stepper at a frequency of 50 steps per minute, what total work he does he do each day

W = 76518 J = 76.518 KJ

Explanation:

First, we will find the total number of steps taken by Brad, as follows:

Now, we will calculate the height covered while covering these number of steps:

Now, we will calculate the amount of work done while covering this distance:

W = 76518 J = 76.518 KJ

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray

answer(20) psi;