A laboratory technician carries out two tests using a force of 20 N.
In test 1, the force acts at right angles to the end of a rigid lever. The end of the lever is 0.30 m from its pivot. A clamp prevents the lever from rotating.
In test 2, the force moves a dynamics trolley 0.30 m in the direction of the force.
For each test, the technician multiplies 20 N by 0.30 m. Both products have a numerical value of 6.0.
Explain why the two products have different physical meanings.
113 exam-style questions on AQA GCSE Physics 5.2 Work done and energy transfer, covering 5.2 Work done and energy transfer. Each one has a worked solution and a mark scheme showing where the marks go.