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Circular Motion Lesson: Factors, Forces, and Examples

Delve into circular motion to understand the forces involved, examples, and how changing factors affects motion. Explore practical demonstrations and engage in learning activities. Discover the concept of centripetal forces and experience related challenges. Enhance comprehension and application through engaging tasks and extension exercises. Use valuable resources to deepen understanding and apply knowledge effectively.

gabriel-merritt
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Circular Motion Lesson: Factors, Forces, and Examples

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Presentation Transcript

  1. Starter – what’s the lesson today? circular + R circle motion + on mosh

  2. 15 November 2014 Circular Motion Objectives Be able to describe the factors that affect an object’s motion in a circular path and give examples.

  3. Outcomes • All should • Give examples of things that follow a circular path and describe what forces are involved. • Most Should • Explain how an object can stay travelling in a circular path • Some Could • Come up with their own examples of things travelling in a circle and describe how changing some of the factors would change the motion.

  4. Whirling Water • http://www.teachersdomain.org/resources/phy03/sci/phys/mfw/roller/assets/phy03_vid_roller/phy03_vid_roller_56_mov.html/phy03_vid_roller_56.mov • Why doesn’t the water spill?

  5. Matching centripetal forces – write these down or come up with your own examples

  6. Period of circular motion

  7. Frequency number of rotations frequency = time taken time taken period = number of rotations 1 1 T = f = f T Frequency, f, is the number of rotations per second. i.e. Because and

  8. Circular MotionPractical Time • Put some goggles on. • Balance a coin on the end of a coat hanger. • Twirl. • The record is 5 coins for 5 spins! Can you equal this?

  9. Circular Motion - Tasks • 1 Draw the diagram and explain the method. • 2 Describe the forces involved. (What keeps the coin on the end of the coat hanger? • 3 Copy and CompleteWhen a body moves in a circle it continuously …………… towards the …………of the circle. • This acceleration changes the …………… of motion of the body, not its …………... • The resultant force causing this acceleration is called the centripetal……………... • The direction of the centripetal force is always towards the centre of the ………………. speedacceleratesdirection circlecentreforce • 4 (Extension) To increase the centripetal force of an object in circular motion you could increase the _____ or ______ or decrease the ______ , whilst keeping the other two variables the same.

  10. Wall of Death • http://www.youtube.com/watch?v=31MMw3Eazqw • Describe why the vehicles stay on the wall

  11. Plenary - Going Up • – describe the lesson; what we did and what you learnt, how you learnt it; to your partner in the time it takes for a lift to reach the top floor – 120seconds. • You may be asked to tell the rest of the class too.

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