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Understanding Circular Motion: Acceleration and Centripetal Force

Learn how an object can change direction without changing speed in circular motion. Understand centripetal force and factors affecting it, with practical examples. Tasks include explaining centripetal acceleration, discussing centripetal force, analyzing factors affecting it, and attempting summary and exam questions.

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Understanding Circular Motion: Acceleration and Centripetal Force

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  1. Circular Motion. Learning objectives; To know that an accelerating object can be undergoing a change in direction without the speed changing. (Grade D/C) To understand that centripetal force acts towards the centre of a turning circle. (Grade C/B) To explain the factors that affect centripetal force. (Grade B +)

  2. Tasks; Use pages 236-237. • Explain fully (with help of a diagram) what centripetal acceleration is. Explain why it is an “acceleration” despite the fact that speed may not change. • Explain why we call the force on a spinning object centripetal force, and not centrifugal. • Write down a discussion of the FACTORS affecting centripetal forces AND explain how these factors affect some everyday examples (eg cars, the cup experiment etc) • Attempt ALL summary questions. • Extension = page 241, exam questions (in full).

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