Fasih

because 10 is the gravity. w = m*g g = 10 m = 70*60 t = 60 p = work done/time work done = F*distance f = m*g f = 70*60*10 f = 42000 distance = 5 work done = 42000*5 work done = 210000 p = work done/t p = 210000/60 p = 3500 watt