A student pushes down on the centre of a flexible ruler supported at both ends. The ruler bends and then remains stationary. Which describes the forces on the ruler?
A downward force at the centre and upward forces at the supports.
A downward force at the centre and downward forces at the supports.
An upward force at the centre and downward forces at the supports.
An upward force at the centre and upward forces at the supports.
102 exam-style questions on Edexcel GCSE Physics 15.1 Forces and springs, covering 15.1.1 Elastic and inelastic distortion, 15.1.2 The spring constant, 15.1.3 Work done in stretching a spring, and 15.1.4 Linear and non-linear force–extension. Each one has a worked solution and a mark scheme showing where the marks go.