An electric winch motor is supplied with 8500 J of total energy. During this time, the efficiency of the motor is 65%.
Calculate the useful energy transferred by the motor.
Use the equation:
efficiency=useful energy transferredtotal energy supplied \text{efficiency} = \frac{\text{useful energy transferred}}{\text{total energy supplied}} efficiency=total energy supplieduseful energy transferred38 exam-style questions on Edexcel GCSE Physics 3.2 Dissipation and efficiency. Each one has a worked solution and a mark scheme showing where the marks go.