A metal cylinder is suspended vertically in equilibrium by a cord. The diagram shows the cylinder in four different positions P, Q, R and S. [Figure shows a metal cylinder suspended in water by a cord, with tension T. Four positions are shown: P (fully submerged), Q (partially submerged, deeper), R (partially submerged, shallower), S (just above water surface).] Which statement explains the variation of the tension T in the cord?
✓ Correct Answer
The correct answer is A: At P and at Q, the tension T in the cord is the same because the difference in pressure between the top and bottom of the cylinder is the same.
📋 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