Question

with what constant velocity can a 1960 watt motors raise a mass of 100kg?

Answer 1

At constant velocity, acceleration of mass is equal to zero. Therefore, F = W.

F=W=mg

F=100 x 9.8=980 N

Let Power of motor be P.

P = F x V

(where V= constant velocity of mass)

V = P / F

V=1960 / 980

V=2 m/s

Answer 2

Answer:

this means that the change in height times the mass times gravity is the work done on the object, so in a perfect world 1960 = 100*9.8*(the change in heght) which results in the answer being roughly 2 meters in one second (most likely less due to energy losses and additional weight of the lifting device)