A load of mass 200kg is lifted vertically upwards slowly with constant speed, over a displacement of 4m and the complete process occurs in 8s. Neglecting friction and all other losses, determine the power exerted. State the reasons of the answers.

m ↑ h₁ a Determine the speed that mass m must have so that when it reaches the height of h, it has half its original speed. All surfaces are frictionless. Show all relevant work and reasoning for credit.

Please answer this question in detail, Don't use chatgpt.

On flat ground, a 70 kg person requiresabout 300 W of metabolic power to walk at a steady pace of5.0 km/h 11.4 m/s2. Using the same metabolic power output, that personcan bicycle over the same ground at 15 km/h. A 70 kg person walks at a steady pace of 5.0 km>h on a treadmillat a 5.0% grade. (That is, the vertical distance covered is 5.0% ofthe horizontal distance covered.) If we assume the metabolic powerrequiredis equal to that required for walking on a flat surface plus therate of doing work for the vertical climb, how much power is required?(a) 300 W; (b) 315 W; (c) 350 W; (d) 370 W.