M3.4 - Motion in a circle

Angular speed.; Radial acceleration in circular v2.

Use angular speed to connect the rule to the data and decision in the question.

This matters because angular speed determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply angular speed to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: Angular speed is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.

motion.; The forms rω 2 and are r required.

Use motion to connect the rule to the data and decision in the question.

This matters because motion determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply motion to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: motion is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.

Uniform motion of a particle Problems involving the ‘conical pendulum’, an elastic moving in a horizontal circle. string, motion on a banked surface, as well as other contexts, may be set.

Use uniform motion of a particle to connect the rule to the data and decision in the question.

This matters because uniform motion of a particle determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply uniform motion of a particle to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: Uniform motion of a particle is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.

Motion of a particle in a vertical circle.

Use motion of a particle in a vertical circle to connect the rule to the data and decision in the question.

This matters because motion of a particle in a vertical circle determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply motion of a particle in a vertical circle to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: Motion of a particle in a vertical circle is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.