A bicycle has an input force of 50 N applied to the pedals. The output force at the wheel is 25 N. The distance the pedals move is 0.5 m, and the wheel moves 2.0 m. * A) Calculate the MA. * B) Calculate the Efficiency.
( \textEfficiency = \frac4.56 \times 100% = \mathbf75% )
Because of friction. Some of the input work is converted into thermal energy (heat) rather than useful output work. Tips for Finding the Official PDF Answer Key