Page 104 - SCIENCE DLP T6 SK (SEMAKAN 2017)
P. 104

Disadvantages of frictional force

           1.                                           2.










              Frictional force can wear out shoe          Loud noise is produced when drilling.
              soles. The worn out shoe soles can          It causes sound pollution.
              cause us to slip easily.


           3.                                           4.










              The friction in car engines can              Rusty screws can increase
              damage the engines over time.                friction and make them
                                                           harder to loosen.



                      What are other effects of frictional force that you can observe?


                                            Effects of Frictional

                                            Force Around Me

           Apparatus and materials: marker pen, manila card, sticky notes

           Steps:
           1.  Identify the effects of frictional force around you.
           2.  In turns, write the effects of frictional force on sticky notes.
           3.  Sort the advantages and disadvantages of frictional force written
               on the sticky notes.
           4.  Paste the sticky notes on a manila card.
           5.  Discuss your observations in your group.

         Question:

         Based on your observation, describe the effects of frictional force in our daily lives.


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