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8  The diagram shows a forcemeter.













                                                     3









               (a) What type of force is it measuring?

                   Circle the correct answer.

                                                        friction

                                                         push

                                                          twist

                                                       upthrust
                                                                                                           [1]


               (b) The forcemeter points to 3.

                   The force is doubled.

                   What does the forcemeter now point to?

                                                                                                           [1]



               (c) What is the unit of force?                                                              [1]















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