Physics (AS & A Level) · Oct / Nov 2016 · Paper 53 · Question 1

A student is investigating the motion of magnets falling through a vertical copper pipe as shown in Fig. 1.1. falling magnet copper pipe Fig. 1.1 The student releases a magnet above the copper pipe. The magnet has speed v as it leaves the pipe. It is suggested that the relationship between v and B is v = v0e–λB where B is the magnetic flux density at the poles of the magnet and v0 and λ are constants. Design a laboratory experiment to test the relationship between v and B. Explain how your results could be used to determine values of v0 and λ. You should draw a diagram, on page 3, showing the arrangement of your equipment. In your account you should pay particular attention to • the procedure to be followed, • the measurements to be taken, • the control of variables, • the analysis of the data, • any safety precautions to be taken. [15] 3 Diagram 4 [Total: 15]

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