Physics · Oct / Nov 2018 · Paper 21 · Question 3

A student uses the apparatus shown in Fig. 3.1 to obtain the extension-load graph of a spring. clamp stand spring load Fig. 3.1 (not to scale) The weights of the loads are known. The student suspends loads of increasing size from the spring and determines the different extensions produced. Fig. 3.2 is the graph the student obtains. 1 0 0 5 10 15 20 25 30 2 3 4 5 6 7 8 9 10 extension / cm load / N Fig. 3.2 The spring reaches its limit of proportionality when the load is 7.0 N.

Read automatically from the paper; the printed page above is exact.