A crowbar balances a load. The effort acts 0.80 m from the pivot and the load acts 0.20 m from the pivot. Both forces act at right angles to the bar. How does the effort compare with the load?
The effort is twice the load.
The effort is one-half of the load.
The effort is four times the load.
The effort is one-quarter of the load.
102 exam-style questions on Edexcel GCSE Physics 9.2 Moments, covering 9.2.1 Rotational effects of forces and moments, 9.2.2 The principle of moments, and 9.2.3 Levers and gears. Each one has a worked solution and a mark scheme showing where the marks go.