Physics (AS & A Level) · Feb / March 2022 · Paper 52 · Question 1

A trolley with a magnet attached is placed on a thin steel sheet as shown in Fig. 1.1. trolley magnet steel sheet θ bench d N S X Fig. 1.1 The angle between the sheet and the bench is θ. The distance from point X to the trolley is d. The trolley is released from rest and travels down the slope. The velocity v of the trolley at X is determined using a light gate. It is suggested that v is related to θ by the relationship mp sin θ – qB = mv 2 2d where m is the mass of the trolley and magnet, B is the magnetic flux density between the magnet and the steel sheet, and p and q are constants. Plan a laboratory experiment to test the relationship between v and θ. Draw a diagram showing the arrangement of your equipment. Explain how the results could be used to determine values for p and q. In your plan you should include: • 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. 3 Diagram 4 [15]

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