Available practice: 73 of 75 marks. Parts 7(a) await marking support. Scores cover available parts only. Theory Paper 2: Section A is compulsory and Section B offers a choice of two questions. Four published mark-scheme discrepancies across the two variants are held from automatic marking.
(a)(i)The extension-versus-mass graph in Fig. 2.2 begins to curve at P. State the name of point P.
Answer guidance
State A short answer. No explanation is needed, and adding one cannot earn extra marks.
[1 mark]
(a)(ii)A student hangs various masses from the end of a spring and determines the extension produced. Fig. 2.1 shows the spring hanging vertically on its own and with an unknown mass X at one end. The student plots a graph of the extension of the spring against the mass hanging on the spring. Fig. 2.2 shows the student’s graph. extension / cm Using Fig. 2.1 and Fig. 2.2, determine the mass X.
[1 mark]
(a)(iii)Fig. 2.1 shows an unknown mass X hanging from a spring. Using Fig. 2.2 and g = 10 N/kg, calculate the weight of X.
Answer guidance
Using You must use the thing it names. An answer that reaches the right value another way may not score.
[1 mark]
(b)A student hangs various masses from the end of a spring and determines the extension produced. Fig. 2.1 shows the spring hanging vertically on its own and with an unknown mass X at one end. An identical spring is used with the original spring, as shown in Fig. 2.3. Together they support the mass X. State and explain how the extension in Fig. 2.3 compares with the extension in Fig. 2.1.
Answer guidance
State A short answer. No explanation is needed, and adding one cannot earn extra marks.
[2 marks]
5054/21/M/J/16Cambridge O Level Physics 5054 · May/June 2016 · Paper 2 variant 1 · Question 2