Question

a machine lifts a 50 kg mass to a height of 60 m in 4s. Calculate the power developed by the machine (take g= 10 m/s)​​

Answer 1

The power developed by the machine is 7700 Watt.

Step-by-step explanation:

`p = (w)/(t)`

Answer 2

`7,500\:\text{Watts}`

Step-by-step explanation:

Power is given by
`P=(W)/(\Delta t)`, where
`W` is work and
`\Delta t` is elapsed time. To calculated work, we'll use
`W=F\Delta x`, where
`F` is force and
`\Delta x` is displacement. Substituting given values, we have:

`W=10\cdot 50\cdot 60=30,000\:\text{J}`.

Now plugging this in to our power equation, we get:

`P=(30,000)/(4)=\boxed{7,500\:\text{W}}`