IB Physics # Topic 6: Circular motion and gravitation

## 6.1 – Circular motion

Essential idea:

A force applied perpendicular to its displacement can result in circular motion.

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

Guidance

Data Booklet reference

• s = vt
• There is a "Δx" not for every distance s.

International-mindedness

Theory of knowledge

Utilization

Aims

• Aim 1:
• Aim 2:

## 6.2 – Newton’s law of gravitation

Essential idea:

The Newtonian idea of gravitational force acting between two spherical bodies and the laws of mechanics create a model that can be used to calculate the motion of planets.

Nature of science:

Laws: Newton’s law of gravitation and the laws of mechanics are the foundation for deterministic classical physics. These can be used to make predictions but do not explain why the observed phenomena exist. (2.4)

Understandings:

Applications and skills

Guidance

Data Booklet reference

• s = vt
• There is a "Δx" not for every distance s.

International-mindedness

Theory of knowledge

Utilization

Aims

• Aim 1:
• Aim 2:
.
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