Turn over 5 6 The following measurements were made to determine the Young modulus of a metal bar. original length of bar = 0.50 m area of cross section = 4.5 × 10−4 m2 tensile force applied to bar = 36 000 N extension of bar = 2.0 × 10−4 m Which of the following gives the Young modulus of the metal? A 36000 0 50 4 5 10 2 0 10 4 4 × × × × − − . . . B 4 5 10 2 0 10 36000 0 50 4 4 . . . × × × × − − C 36000 2 0 10 4 5 10 0 50 4 4 × × × × − − . . . D 4 5 10 0 50 36000 2 0 10 4 4 . . . × × × × − − (Total for Question 6 = 1 mark)