Page 3 - SIMPLE MACHINES
P. 3

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                                                                S
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                        MACHINES
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                  • •We use machines in our daily routines such as to clean,
                    We
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                  move, create, repair, relax, have fun, and accomplish
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                  work.

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                  • •For example, we use a calculator to perform calculations,
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                  an electric iron to iron our clothes, an electric toaster to
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                  toast bread, a washing machine to wash our clothes, etc.
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                                                                                                                              o
                  • •Machines require human energy in order to work. A
                                                                                                                          w
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                  m   a c  h  in e    m   a  kes      o  ur     w  o rk     e  a  s ier     im    p l ies     th   a  t   w  e    n ee    d    l es  s
                  machine makes our work easier implies that we need less
                  force to do the same amount of work. They save our
                  f o  rc   e   to     d  o    th   e   s  a  m  e    a  m  o  un   t   o  f   w   o rk.      T  h  ey      s a  v e    o ur
                  time, effort and labour.
                  tim    e,     ef   f  o rt     a n  d    l a b  o ur.


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                  • •Machines can be simple or complex. Simple machines are
                                                                                                                                      in
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                  b  a  s ic  s   a  n d    h  a  v e    f ew      p  a rt   s   w   h il e    c o  m   p l ex     m   a c  h  in  e s    us  e
                  basics and have few parts while complex machines use
                  c o  m   b  in a  tio   n    o f    t w  o    o  r   m   o re     s  im   p l e   m   a  c h  in  es   .
                  combination of two or more simple machines.
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