O-LevelPhysicsForcesOct/Nov 2024Paper 3 Q314 Marks
In this experiment you will determine the mass of a metre rule. You are provided with: • a metre rule • a fixed mass taped to the rule at the 5.0 cm mark • a pivot • six 10g slotted masses • a piece of modelling clay. The fixed mass has been taped to the metre rule at the 5.0 cm mark. Do not change the position of this mass. (a) Place the pivot below the 25.0 cm mark on the metre rule, as shown in Fig. 3.1. [Figure 3.1] Place two 10g masses together to make a 20 g mass. Place the 20g mass on the metre rule and adjust the position of the mass until the rule is as close to balance as possible.
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🎯 Mark Scheme Breakdown
Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.
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