Physics (AS & A Level) · Oct / Nov 2025 · Paper 22 · Question 3
9702
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A spring is fixed at one end and attached to the frame of a pulley at the other end. A cable is passed around the wheel of the pulley. The spring is stretched to a fixed length using the cable and pulley. Fig. 3.1 shows the view from above of the spring, cable and pulley. spring fixed end pulley frame pulley wheel cable Fig. 3.1 The spring obeys Hooke’s law and has a spring constant k of 250 N m–1. A force F acts on the spring. The tension in the cable is T. The pulley is in equilibrium.
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3(a)[2]
3(b)(i)[1]
3(b)(ii)[2]
3(c)(i)[2]
3(c)(ii)[2]
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