An experimental magnetic levitation tray is suspended above a superconducting track. The track exerts a magnetic force of 340 N directed vertically upwards on the levitation tray.
State the magnitude and direction of the force exerted by the levitation tray on the superconducting track.
57 exam-style questions on Edexcel GCSE Physics 2.3 Forces and Newton's laws, covering 2.3.1 Newton's first law, 2.3.2 Newton's second law, and 2.3.3 Weight and gravitational field strength. Each one has a worked solution and a mark scheme showing where the marks go.