Distance Moved
The linear distance a screw shaft moves when it is rotated through an angle of degrees is:
where is the lead of the screw.
The distance ratio of a simple machine is defined as the ratio of the distance the applied force moves to the distance the load moves. For a screw it is the ratio of the circular distance din a point on the edge of the shaft moves to the linear distance dout the shaft moves. If r is the radius of the shaft, in one turn a point on the screw's rim moves a distance of 2πr, while its shaft moves linearly by the lead distance l. So the distance ratio is
Read more about this topic: Screw (simple Machine)
Famous quotes containing the words distance and/or moved:
“From a distance the rushing of the torrent delights and uplifts us, but it rocks us in a flimsy boat, we are overwhelmed by despair. The same applies to danger.”
—Franz Grillparzer (1791–1872)
“Unless comedy touches me as well as amuses me, it leaves me with a sense of having wasted my evening. I go to the theatre to be moved to laughter, not to be tickled or bustled into it.”
—George Bernard Shaw (1856–1950)