*47. ssm Consult Multiple-Concept Example 11 for background material relating to this problem. A small rubber wheel on the shaft of a bicycle generator presses against the bike tire and turns the coil of the generator at an angular speed that is 38 times as great as the angular speed of the tire itself. Each tire has a radius of 0.300 m. The coil consists of 125 turns, has an area of 3.86 x 10-3 m2, and rotates in a 0.0900-T magnetic field. The bicycle starts from rest and has an acceleration of + 0.550 m/s2. What is the peak emf produced by the generator at the end of 5.10 s?

 

Peak emf is given by

We are told

We can get the bike wheel angular speed by normal kinematics

 

We can get the wheels’ final speed by

 

 

 

 

 

 

 

 

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This page last updated on June 25, 2018