Page 201 - SK Year 6 Science DLP
P. 201

MACHINES
                                                                                          MACHINES
                                                                                          MESIN
                          Lever                                              Well, that’s easy. Use a
                                                                             spoon. The spoon acts as a
                                         It’s so hard to                     lever to open the lid of the
                                         open the lid of this                can easily.
                                         can. Help!















                                The lid of the can acts as a load, the tip of the spoon
                                that touches the lid is the fulcrum, while Rani’s hand that
                                pushes the spoon handle downwards acts as the force.





                      A lever consists of a piece of rod that moves                                   force
                      at a fixed point called the fulcrum. Levers help                                (effort)
                                                                            load
                      us to lift and move objects easily. Observe
                      the diagram on the right. Levers consist of
                      three parts, namely, load, force (effort), and                              fulcrum
                      fulcrum.


                                                                                                  HOTS
                                          force                                                   HOTS
                           fulcrum                                         force
                                                              fulcrum  load             Our arm is a simple
                             force                                                      machine. How does our
                                                                                        arm function as a
                                                                                        simple machine?
                                          fulcrum
                                                       load
                          load


                                                                       Describe a different
                      The examples of levers shown above make  example on the
                      our daily work easier. How are they used         use of levers in our
                      in the situations above?                         daily lives.





                        12.1.1                                                                              193
   196   197   198   199   200   201   202   203   204   205   206