Question

A 5.8x10 ^4 watt elevator motor can lift a total weight of 2.1 x10^4 newtons with a maximum constant speed of

Answer 1

Answer : The speed of motor will be, 2.76 m/s

Solution : Given,

Power of motor =
`5.8* 10^4watt`

Force =
`2.1* 10^4N`

Formula used :

`Power=Force* Velocity\\\\Velocity=(Power)/(Force)`

Now put all the given values in this formula, we get the speed of motor.

`Velocity=(Power)/(Force)=(5.8* 10^4watt)/(2.1* 10^4N)=2.76m/s`

Therefore, the speed of motor will be, 2.76 m/s

Answer 2

The formula for power is used to solve for the speed. Given are P = 5.8x10^4 W and W = 2.1 x10^4 N = F. Formula: v =P / F this would result to v = 5.8 x10^4 W / 2.1x10^4 N = 2.76 m/s. I hope this helps you