A Sankey diagram represents the energy transfers in two stages of an electric winch.
At the first stage, arrow P splits into arrows Q and R. At the second stage, arrow R splits into arrows S and T.
| Arrow | Width |
|---|---|
| P | 72 mm |
| Q | 18 mm |
| S | 21 mm |
Arrow Q represents an energy transfer of 144 J.
Calculate the energy represented by arrow T.
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.