A-LevelPhysicsGravitational fieldsMay/June 2020Paper 4 Q110 Marks
An isolated solid sphere of radius r may be assumed to have its mass M concentrated at its centre. The magnitude of the gravitational potential at the surface of the sphere is φ. The sphere in (b) is a planet with radius r of 6.4 × 10⁶ m and mass M of 6.0 x 10²⁴ kg. The planet has no atmosphere. A rock of mass 3.4 x 10³ kg moves directly towards the planet. Its distance from the centre of the planet changes from 4r to 3r.
✓ Correct Answer
The correct answer is —. This question tests the candidate's understanding of gravitational fields within the Physicssyllabus. The examiner's mark scheme requires...
📋 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...
🔒
Unlock the Examiner's Answer
Sign up for free to reveal the correct answer, the official mark scheme breakdown, and the examiner trap analysis for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep