A motor moves a roof panel along a straight rail. The motor's force acts along the rail and is constant during each stage.
| Stage | Force | Distance moved in the direction of the force |
|---|---|---|
| 1 | 320 N | 0.80 m |
| 2 | 220 N | 1.20 m |
A replacement motor moves the panel through the same total distance and does the same total work, but exerts a constant force throughout.
Calculate the force exerted by the replacement motor.
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.