Work through the list without notes. If you cannot do a statement, follow its link, then come back. Guide = study guide; Practice = practice questions.
Understanding
- I can explain why a spinning wheel is a rigid system and not an object, and say when a spinning body can still be modelled as a single object. (Guide: “When a point is not enough”)
- I can state an axis, a reference line and a positive rotation sense before I write any angular sign. (Guide: Figure 1; every practice question)
- I can explain why every point on a rigid body has the same angular velocity and angular acceleration. (Guide: “Angular velocity and angular acceleration”)
- I can match each rotational quantity and equation to its linear partner from Unit 1. (Guide: “The analogy with linear motion”)
Skills
- I can convert between revolutions, degrees, radians and rpm. (Guide: “Measure angles in radians”; Practice Q1, Q4)
- I can calculate average angular velocity and average angular acceleration with signed values, including a reversal. (Guide: Worked example 2; Practice Q2)
- I can choose and use the right constant-α equation for a spin-up or a slow-down. (Guide: Worked examples 1 and 2; Practice Q4)
- I can find α from the slope, and Δθ and the total angle from the areas, of an ω–t graph. (Guide: Figure 2; Practice Q5)
- I can sketch the angle–time graph that matches a given ω–t graph. (Practice Q5)
- I can process angle–time data into an ω–t graph using midpoint times and find α and ω₀. (Guide: “Investigating rotation in the lab”; Practice Q6)
Reasoning
- I can decide whether a rotation is speeding up or slowing down from the signs of ω and α. (Guide: speeding-up table; Practice Q2, Q5)
- I can derive a symbolic expression and use it to predict a factor of change, such as the stopping angle when ω₀ is tripled. (Guide: “Functional dependence”; Practice Q3, Q7)
- I can design a procedure to test whether a wheel’s angular acceleration is constant, and use data to support or refute that claim. (Guide: “Investigating rotation in the lab”; Practice Q6)
All ticked? Move on to Topic 5.2, Connecting Linear and Rotational Motion, or return to the course roadmap.