Question

A bucket of water is brought up from a well 9.68m deep by a rope which Winds round a drum 22cm in diameter .How many turns of the handle are required to bring up a bucket from the bottom of the well

Answer 1

$\textbf{Answer:}$

$diameter \: of \: drum = 22cm = 0.22m \\ \\ radius \: of \: the \: drum = \frac{0.22}{2} = 11 \\ \\ height = 9.68m \\ \\ circumfrence \: of \: the \: circle = 2\pi \: r \\ \\ 2 \times \frac{22}{7} \times 0.11 = 0.691m \\ \\ no \: of \: turns = \frac{9.68}{0.691} \\ \\ = 14 \: turns$


$\textbf{Hope it helps you!}$