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SAI INTERNATIONAL SCHOOL

                                                       CLASS-IV


                                                  SUBJECT - SCIENCE

                                     CHAPTER 10-FORCE, WORK AND ENERGY

                                     SUB TOPIC-TYPES OF FORCES AND WORK


                                (GRAVITATIONAL FORCE AND FRICTIONAL FORCE)



                                                  TYPES OF FORCES
                                                           NO




                     GRAVITATIONAL FORCE                              FRICTIONAL FORCE







                 The force by which all                              The force that is created

                 the objects are pulled                              when two surfaces move

                 down towards the                                    or try to move above each

                 Earth’s surface.                                    other.


                  EXAMPLE:                                        EXAMPLE:

                    •  We can stand, walk or run because of           •  A moving cycle comes to a stop if we do
                        gravitational force.                              not keep pedalling.
                    •  Fruits and leaves always fall to the           •  After pushing, a toy car moves to a certain
                        ground.                                           distance and then comes to a stop.
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