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                                                                   the two pressure equations are equal.
                                                           Hence, the zero point must be where
                                  Frictional forces between roller and




                      System equilibrium


                                                                                       n
                                                                                      H

                                          material must be in balance.
                                                                                      2  )H  )µ
                                                  or material will be torn apart
                                                                                      −
                                                                                       b







                                                                                      exp  (                  Prof. Ramesh Singh, Notes by Dr.   Singh/ Dr. Colton




                                                                                      =



                                                                                  )   (
                                                                                    b      )2µ  n
                                                                                  H        H
                                                                                  (µ



                                                                                  exp      exp






                                                                                      =    (


                                                                                    b       f
                                                  –                               h        h



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