Question

29. Find the average power output in Problem 28 (Work done = 980,000 J; time = 10 h)i. Wattsii. Horsepower

Answer 1

`\begin{gathered} 27.22W \\ 0.0365hp \end{gathered}`

Step-by-step explanation

To find the power output, we have to apply the formula:

`P=(W)/(t)`

where w = work done

t = time taken (in seconds)

Therefore, the power output is:

`\begin{gathered} P=(980,000)/(10\cdot3600) \\ P=(980,000)/(36,000) \\ P=27.22W \end{gathered}`

To convert this to horsepower, we multiply the power in Watts by 0.00134:

`\begin{gathered} P=27.22\cdot0.00134 \\ P=0.0365hp \end{gathered}`

That is the power in Watts and horsepower.