<P> A crank can be used to convert circular motion into reciprocating motion , or conversely turn reciprocating motion into circular motion . </P>
<P> A crank can be used to convert circular motion into reciprocating motion , or conversely turn reciprocating motion into circular motion . </P>
converts linear motion of the pistons into rotary motion
converts linear motion of the pistons into rotary motion
crank
crank