O-LevelPhysicsForcesOct/Nov 2024Paper 4 Q314 Marks
A student does an experiment to find the mass of a metre rule. (a) A fixed mass is placed on the metre rule at the 5.0 cm mark as shown in Fig. 3.1. [Figure 3.1] The student: • places the pivot below the 25.0 cm mark on the metre rule • places a mass of mass m = 20g on the metre rule • adjusts the position of the 20g 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.
🔒
Unlock the Examiner's Analysis
Sign up for free to reveal the full examiner report, trap analysis, and mark scheme breakdown for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep