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physics

calculate the average speed at which a motor rated 200 raises a 40kg load

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  1. Well, I guess it is a magic100% efficient motor and you mean 200 Watts or Joules / second or Newton meters/second? ( for heaven's sake be careful with your units ! )
    40 Kg on earth weighs about 40*9.81 = 392 Newtons
    raise that at speed = V meters/second
    power required = weight * distance per second
    200 Newton meters/second = 392 Newtons * V
    V = 200 Newton meters/second / 392 Newtons
    V = 0.51 Meters/second

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