• 9702 November 2017 Paper 22 Worked Solutions | A-Level Physics

Question 1
One end of a wire is connected to a fixed point. A load is attached to the other end so that the wire hangs vertically.





Question 2
A thin disc of radius r is supported at its centre O by a pin. The disc is supported so that it is vertical. Three forces act in the plane of the disc, as shown in Fig. 2.1.





Question 3
A spring is attached at one end to a fixed point and hangs vertically with a cube attached to the other end.





Question 4
A horizontal string is stretched between two fixed points X and Y. The string is made to vibrate vertically so that a stationary wave is formed.





Question 5
Two vertical metal plates in a vacuum have a separation of 4.0 cm. A potential difference of 2.0 × 102 V is applied between the plates. Fig. 5.1 shows a side view of this arrangement.





Question 6
A metal wire in a circuit is damaged. The resistivity of the metal is unchanged but the cross-sectional area of the wire is reduced over a length of 3.0 mm, as shown in Fig. 6.2.