A force-extension graph is plotted for a metal wire that obeys Hooke's law. Which quantities are represented by the gradient of the graph and the area under the graph?
Gradient is spring constant, Area under the graph is work done.
Gradient is spring constant, Area under the graph is extension.
Gradient is work done, Area under the graph is spring constant.
Gradient is extension, Area under the graph is work done.
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.