DP Physics Questionbank
6.1 – Circular motion
Description
Nature of science:
Observable universe: Observations and subsequent deductions led to the realization that the force must act radially inwards in all cases of circular motion. (1.1)
Understandings:
- Period, frequency, angular displacement and angular velocity
- Centripetal force
- Centripetal acceleration
Applications and skills:
- Identifying the forces providing the centripetal forces such as tension, friction, gravitational, electrical, or magnetic
- Solving problems involving centripetal force, centripetal acceleration, period, frequency, angular displacement, linear speed and angular velocity
- Qualitatively and quantitatively describing examples of circular motion including cases of vertical and horizontal circular motion
Guidance:
- Banking will be considered qualitatively only
Data booklet reference:
International-mindedness:
- International collaboration is needed in establishing effective rocket launch sites to benefit space programmes
Theory of knowledge:
- Foucault’s pendulum gives a simple observable proof of the rotation of the Earth, which is largely unobservable. How can we have knowledge of things that are unobservable?
Utilization:
- Motion of charged particles in magnetic fields (see Physics sub-topic 5.4)
- Mass spectrometry (see Chemistry sub-topics 2.1 and 11.3)
- Playground and amusement park rides often use the principles of circular motion in their design
Aims:
- Aim 6: experiments could include (but are not limited to): mass on a string; observation and quantification of loop-the-loop experiences; friction of a mass on a turntable
- Aim 7: technology has allowed for more accurate and precise measurements of circular motion, including data loggers for force measurements and video analysis of objects moving in circular motion
Directly related questions
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- 18M.2.HL.TZ2.9c.i: Show that the speed v of an electron in the hydrogen atom is related to the radius r of the orbit...
- 18M.1.SL.TZ2.23: A mass at the end of a string is swung in a horizontal circle at increasing speed until...
- 18M.1.HL.TZ2.17: An object of mass m moves in a horizontal circle of radius r with a constant speed v. What is...
- 18M.2.SL.TZ1.5c.ii: Explain why the electron moves on a circular path.
- 18M.2.SL.TZ1.5c.i: Explain why the electron moves at constant speed.
- 18M.1.SL.TZ1.22: An object of mass m at the end of a string of length r moves in a vertical circle at a constant...
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- 17N.1.SL.TZ0.21: A mass attached to a string rotates in a gravitational field with a constant period in a vertical...
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- 17M.1.HL.TZ2.18: A small ball of weight W is attached to a string and moves in a vertical circle of radius...
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- 17M.1.SL.TZ1.23: An object of constant mass is tied to the end of a rope of length l and made to move in a...
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- 16M.1.SL.TZ0.23: ...
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- 14M.2.SL.TZ1.6a: Determine the magnitude of the velocity of Aibhe relative to (i) Euan. (ii) the centre of the...
- 14M.2.SL.TZ1.6b: (i) Outline why Aibhe is accelerating even though she is moving at constant speed. (ii) Draw an...
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- 15N.2.SL.TZ0.2b: Show that the orbital speed of Phobos is about \({\text{2 km}}\,{{\text{s}}^{ - 1}}\).
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- 15N.2.SL.TZ0.2c: Deduce the mass of Mars.
- 14N.1.SL.TZ0.5: An object rotates in a horizontal circle when acted on by a centripetal force F. What is the...
- 14N.1.HL.TZ0.5: An object rotates in a horizontal circle when acted on by a centripetal force F. What is the...
- 14M.2.HL.TZ2.9h: (i) Calculate the maximum speed of the car at which it can continue to move in the circular...
- 14M.2.SL.TZ2.6c: (i) Calculate the maximum speed of the car at which it can continue to move in the circular...
- 12N.1.SL.TZ0.11: What is the acceleration of an object rotating with constant speed v in a circle of radius r? A....
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- 12M.1.SL.TZ1.8: A car moves at constant speed around a horizontal circular track. The resultant force on the car...
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- 12N.2.SL.TZ0.9b: The diagram shows a satellite orbiting the Earth. The satellite is part of the network of...
- 12N.2.SL.TZ0.9c: (i) Explain why the satellite is accelerating towards the centre of the Earth even though its...
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