Cambridge International AS & A Level Physics · A2 12 · structured
Centripetal force on a mass on a string
Motion in a circle · Original GioPhysics question with a detailed, mark-by-mark answer guide.
- Demand
- demanding
- Marks
- 5
- Topics
- 2
- Answer
- Complete
Question5 marks
A mass on a string of mass 1.2 kg moves at constant speed 6.4 m/s in a circle of radius 1.8 m. Calculate its centripetal acceleration and resultant force.
Task interpretation
What a complete response should do
Build a visible chain from the information given to the quantity or statement requested.
Split the problem into linked stages and state why each relationship applies.
- Response type
- structured
- Allocation
- 5 marks
- Demand
- demanding
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Use your answer and the marking steps—not confidence alone—to choose.