1) How much work is done lifting a 50kg weight a distance of 3m directly upwards? 2) If it took 1.5secs, what was the power output? 5secs? 3) A 66kg person steps up and down on a 1.5m bench at a rate of 32 steps/min for 1.5minutes. How much work was done? What was the power output? 4) If the person was 4kg heavier, how much work was done? Power output? Did work and power increase/decrease/stay the same? 5) A person pedals on a Monark cycle ergometer at a rate of 60rpms for 45sec against a resistance of 50N. How much work was done? What was the power output? 6) If the person was 3kg heavier, how much work was done? Power output? Did work and power increase/decrease/stay the same? W = F s P = W/At Fatigue index = [(Peak Power Output - Current Power Output)/Peak Power Output] 100 Note: The force required to lift 1 kg against the pull of gravity is 9.81 Newtons (N), 1 pedal revolution on a Monark ergometer equals 6 meters (m) traveled.