An industrial electromagnetic press is used to compress a heavy-duty spring during a component assembly process.
The spring constant of the spring is 450 kN/m450 \text{ kN/m}450 kN/m.
The press performs 180 J of work to fully compress the spring.
The press takes 0.15 s to complete this compression.
Calculate the useful power output of the electromagnetic press during this process.
26 exam-style questions on Edexcel GCSE Physics 8.3 Power and efficiency. Each one has a worked solution and a mark scheme showing where the marks go.