7 Turn over 10 A student carries out an investigation to measure the Young modulus of the material of a wire. He clamps one end of the wire and passes the other end over a pulley as shown. G-clamp masses pulley marker metre rule wire wooden blocks The student measures the length and diameter of the wire. He hangs masses from the free end of the wire and completes a table with values of mass and extension. Describe how the data collected should be used to determine the Young modulus using a graphical method. Your answer should include a sketch of the expected graph. (4) .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. .................................................................................................................................................................................................................................................. (Total for Question 10 = 4 marks)