A student measures the length of a spring with different loads attached to it. The table below shows her results:
| Load (N\text{N}N) | Length (mm\text{mm}mm) |
|---|---|
| 0 | 240 |
| 1.0 | 245 |
| 2.0 | 251 |
| 3.0 | 256 |
| 4.0 | 262 |
| 5.0 | 267 |
What is the extension of the spring when a load of 4.0 N is attached to it?
6 mm6\text{ mm}6 mm
17 mm17\text{ mm}17 mm
22 mm22\text{ mm}22 mm
262 mm262\text{ mm}262 mm
245 exam-style questions on CIE IGCSE Physics 1.5 Forces, covering 1.5.1a Forces, resultant force and motion, 1.5.1b Load–extension graphs and the spring constant, 1.5.1c Friction and drag, 1.5.1d Force, mass and acceleration, 1.5.1e Motion in a circular path, 1.5.2a Moment of a force, 1.5.2b Principle of moments and equilibrium, and 1.5.3 Centre of gravity and stability. Each one has a worked solution and a mark scheme showing where the marks go.