Physics (AS & A Level) · May / June 2026 · Paper 52 · Question 2
9702
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A bar is fixed between two stands. A rod of mass M is suspended from the bar by two parallel strings as shown in Figure 2.1. L bar stand stand rod string string bench Figure 2.1 The separation of the two strings is L. One end of the rod is displaced horizontally and then released. The rod rotates with oscillations about its centre. The time for 10 oscillations is t. The period T of the oscillations is determined. The experiment is repeated for different values of L. It is suggested that T and L are related by the equation T = 2π L αD Mg where g is the acceleration of free fall, D is the distance between the bar and the rod, and α is a constant. 2 1
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2(a)[1]
2(b)[2]
2(c)(i)[2]
2(c)(ii)[2]
2(c)(iii)[2]
2(d)[1]
2(e)(i)[2]
2(e)(ii)[1]
2(f)[2]
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