Force and Density
From MrReid.org Wiki
Lesson Order
Separate
- 4-FAD-01 Scalars and vectors
- 4-FAD-02 Moments, Principle of moments and Centre of Gravity
- 4-FAD-03 Applying the principle of moments
- 4-FAD-04 Hooke's Law
- 4-FAD-05 Pressure
- 4-FAD-06 Density
- 4-FAD-07 Revision and test
Dual
- 4-DFAD-01 Moments
- 4-DFAD-02 Centre of Gravity
- 4-DFAD-03 Hooke's Law - Springs and wires
- 4-DFAD-04 Hooke's Law - Elastic bands and round up
- 4-DFAD-05 Pressure
- 4-DFAD-06 Density
- 4-DFAD-07 Revision and test
Topics covered
- The difference between scalars and vectors
- Adding forces along a line
- Recall and use of Moment = force x perpendicular distance from pivot
- The weight of a body acts through the centre of gravity
- The principle of moments
- The upward force on a light beam varies with the position on a heavy object placed on the beam
- How extension varies with applied force for helical springs, metal wires and rubber bands
- Hooke's Law
- Elastic behaviour
- Pressure = force / area
- Density = mass / volume
- Direct measurement of the density of solid and liquid
- Reinforcing the practical skills of:
- taking and recording data;
- plotting meaningful and relevant graphs;
- identifying whether a graphical relationship is linear or proportional;
- expressing derrived results to a reasonable number of significant figures;
- identifying how to improve the reliability of data.