mafanta
When we use the screw and put it into a wall we rotate it to the clock wise
It is one simple piece it does not need multiple pieces to make it.
what is a screw
Just exactly the same way you screw into wood.
to screw in something that needs to be screwed in the wall or anywere !
To screw screws'!
mafanta
A screw operates by a raised ledge which proceeds up the shaft of the screw in a spiral. This raised ledge is called the thread of the screw. Since the spiral can either proceed in a clockwise or counterclockwise manner, we distinguish between right-hand thread screws (counterclockwise as viewed from above) and left-hand thread screws (clockwise).
There are several uses for a balll screw jack. Ball screw jack assemblies use small balls to roll between the nut and the lifting ball screw. It creates less friction and increases use life.
a hammernand a screw
centrifugal
For tightening and loosening screws.
A vice use a screw to open and close.
No, they are adequate for many uses.
A lead screw is used to transfer circular motion into linear motion as the lead screw engages with a nut
A screw jack is just that, a big screw in a base. As the screw is screwed out, it raises whatever it is under. A scissor jack that is in most new cars uses a screw to pull the jack together which causes it to raise up.