| Exam Board | OCR |
|---|---|
| Module | M4 (Mechanics 4) |
| Year | 2002 |
| Session | January |
| Marks | 4 |
| Paper | Download PDF ↗ |
| Mark scheme | Download PDF ↗ |
| Topic | Circular Motion 1 |
| Type | Angular kinematics – constant angular acceleration/deceleration |
| Difficulty | Moderate -0.8 This is a straightforward application of constant angular acceleration equations (rotational analogues of SUVAT). Both parts require direct substitution into standard formulae with no conceptual difficulty or problem-solving insight needed—simpler than average A-level questions. |
| Spec | 6.05a Angular velocity: definitions |
1 A wheel rotating about a fixed axis is slowing down with constant angular deceleration. Initially the angular speed is $24 \mathrm { rad } \mathrm { s } ^ { - 1 }$. In the first 5 seconds the wheel turns through 96 radians.\\
(i) Find the angular deceleration.\\
(ii) Find the total angle the wheel turns through before coming to rest.
\hfill \mbox{\textit{OCR M4 2002 Q1 [4]}}