Search results
Revision notes on 4.2.1 Moments for the AQA A Level Physics syllabus, written by the Physics experts at Save My Exams.
Moments act about a point in a clockwise or anticlockwise direction. The point chosen could be any point on the object, but the. pivot. - also known as the fulcrum - is usually chosen. The...
- Moment of a Force. A. Couple. When we tighten a screw, we apply a turning effect to the screwdriver. If we apply one force to the screwdriver, then the screwdriver would move sideways.
- Couple. B. Torque. Consider two parallel forces, each of magnitude (F) acting on a bolt head, each force produces a moment about the centre of the bolt head.
- Centre of Gravity. F. Example Application. A uniform beam, as shown in Figure 4, is horizontal and it is supported at two points. The mass of the beam is 2500 N. Calculate the moment acting on each support.
- Uniform Beam Supported at Two Points. Solution: A vector diagram for the above example is given in Figure 5. The total mass of the beam is represented by force (F), acting at the centre of the beam.
If an object is balanced, the total clockwise moment about a point is equal to the total anticlockwise moment about the same point. This is called the Principle of Moments.
The Principle of Moments states that when a body is balanced, the total clockwise moment about a point equals the total anticlockwise moment about the same point.
Each slit acts as a coherent point source making a pattern of light and dark fringes. Light fringes are formed where the light meets in phase and interferes constructively, this occurs
This teaching guide aims to provide background material for teachers preparing students for the Turning Points in physics option of our A-level Physics specification (7408). It gives teachers more detail on specification topics they may not be familiar with and should be used alongside the specification. This guide is not designed to be used as ...
