A-LevelPhysicsForces, density and pressureFeb/Mar 2017Paper 1 Q121 Mark
A uniform metre rule of weight 2.0 N is pivoted at the 60 cm mark. A 4.0 N load is suspended from one end, causing the rule to rotate about the pivot. [Figure showing a metre rule pivoted at 60 cm mark, 4.0 N load suspended] At the instant when the rule is horizontal, what is the resultant moment about the pivot?
A0.0 N m
B1.4 N m
C1.6 N m
D1.8 N m
✓ Correct Answer
The correct answer is B. This question tests the candidate's understanding of forces, density and pressure within the Physicssyllabus. The examiner's mark scheme requires...
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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...
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