Page 14 - TYPES OF FORCES (FRICTIONAL , GRAVITATIONAL, MAGNETIC AND BOUYANT FORCES)
P. 14

6. MAGNETIC FORCE:
                  6  .    M    A   G   N    E  T   I  C     FO      R  C   E  :






                                                                            a
                                                                              g
                    T
                               f
                                                                                 n
                                 o
                                                              h
                                             b


                                                                   a
                          e

                                        e
                       h
                                                                        m
                                                y

                                                     w
                  • •The force by which a magnet
                                                        h
                                                           ic

                                    rc
                                                                                   et
                  attracts magnetic materials is
                  a  tt  ra   c  ts    m   a  g n  etic       m  a  t eria     l s   is
                  kn   o  w  n   a  s    m  a  g  n et   ic    f o  rc   e .
                  known as magnetic force.
                                                    w
                                                                 w
                                                          en

                                                       h
                             exa
                                      m
                                                                                      s

                                                                              ke
                                             e,
                                                                                              e
                  • •For example, when we take some
                                                                                        o
                                                                                           m
                                                                            a
                                                                     e
                                         p
                         r
                       o
                                            l
                    F
                                                                         t
                                                   s

                                                     p
                                                                                     n
                                                                                  o


                                                                                         a


                                                                d
                                                        rea
                                                                          em
                                                                       h
                                                                     t
                               a
                             n
                                     s
                                  il
                  iro
                  iron nails and spread them on a

                        n
                                         a
                                              d

                                            n
                  piece of paper then bring a
                  p  iec   e    o f    p a  p  er     th   en     b  rin   g    a
                  magnet close to them, the iron
                  m   a g  n et     c  l o s e    to     th   em    ,   t h  e    iro   n
                  nails are attracted to the
                  n a  il s   a  re     a  tt  ra   c  ted      t  o   t h  e
                      a
                  magnet.
                        g
                  m
                             et.

                           n
                                                                                g
                                                b
                                                                             a
                                                                                     et
                                                                                  n
                  • •This occurs because a magnet
                    T
                                                                e

                                                   ec
                          is
                                                                    a
                               o
                                                        a
                                    c
                                  c
                                                           us
                                       urs
                                                                         m


                       h
                  a  tt  ra   c  ts    c  erta      in    m  a  teria      l s   s uc   h    a  s
                  attracts certain materials such as
                  iron. These materials are known
                  iro   n  .   T  h  es   e    m  a  teria      l s   a  re     kn   o w   n
                  as magnetic materials.
                  a  s   m   a g  n etic       m   a  teria      l s .
                  •
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