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

Answer:

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

Explanation:

Power is given by $P=\frac{W}{\Delta t}$, 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:

$P=\frac{30,000}{4}=\boxed{7,500\:\text{W}}$

Answer 2

Answer:

The power developed by the machine is 7700 Watt.

Explanation:

$p = \frac{w}{t}$