question_answer

A 1 Kilowatt motor is used to pump up water through a height of 10 m. Calculate the amount of water lifted per minute.

Answer:

Given, \[P=1\,\,kW=1000\,\,W\] \[h=10mt=1\,\,\min =60s\] \[m=?g=9.8\,\,m/{{s}^{2}}\] We know, \[P=\frac{mgh}{t}\Rightarrow m=\frac{pt}{gh}\] \[\therefore m=\frac{1000\times 60}{9.8\times 10}=612.24\,\,kg\]