A forming press pushes a metal component downwards in three stages. The downward force is constant during each stage.
| Stage | Downward force | Distance moved downwards |
|---|---|---|
| initial compression | 12 000 N12\,000\ \mathrm{N}12000 N | 8.0 mm |
| final shaping | 20 000 N20\,000\ \mathrm{N}20000 N | 4.0 mm |
| held in place | 20 000 N20\,000\ \mathrm{N}20000 N | 0 mm |
What is the total work done on the component by the downward force?
176 J176\ \mathrm{J}176 J
176 kJ176\ \mathrm{kJ}176 kJ
96 J96\ \mathrm{J}96 J
240 J240\ \mathrm{J}240 J
115 exam-style questions on Edexcel GCSE Physics 8.1 Energy transfers and work, covering 8.1.1 Energy stores and transfer diagrams, 8.1.2 Ways of changing a system's energy, and 8.1.3 Work done by forces. Each one has a worked solution and a mark scheme showing where the marks go.