Physics (AS & A Level) · May / June 2017 · Paper 22 · Question 3

The Young modulus of the material of a wire can be determined using the apparatus shown in Fig. 3.1. bench scale S wire marker on wire pulley masses F X C clamp Fig. 3.1 One end of the wire is clamped at C and a marker is attached to the wire above a scale S. A force to extend the wire is applied by attaching masses to the other end of the wire. The reading X of the marker on the scale S is determined for different forces F applied to the end of the wire. The variation with X of F is shown in Fig. 3.2. 2.0 0 10 20 30 40 4.0 6.0 8.0 10.0 X / mm F / N 12.0 Fig. 3.2

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