Thursday, June 28, 2012

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Screw

Screw
Simple machine having threads on its cylindrical surface is called screw.It is modified inclined plane as the threads coilied in the cylindrical surface are in the cylindrical surface are in the form of inclined plane.


Thread
The inclined plane shaped on the cylindrical surface of a screw is called screw


Pitch
It is the distance between two threads.


VR= Circumference of cylinder
                 Pitch
Principal of screw is "Lesser the pitch more the magnification"
      

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