A student measures the length of a spring with different weights attached. For a weight of 0 N, the length of the spring is 340 mm. For other weights: at 1.0 N, the length is 345 mm; at 2.0 N, the length is 350 mm; at 3.0 N, the length is 356 mm; at 4.0 N, the length is 362 mm; at 5.0 N, the length is 367 mm.
What is the extension of the spring with a weight of 4.0 N attached to it?
6 mm6\text{ mm}6 mm
12 mm12\text{ mm}12 mm
22 mm22\text{ mm}22 mm
62 mm62\text{ mm}62 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.