This question has several parts that must be completed sequentially. If you skip

Question

This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. A bicycle pedal is pushed by a foot with a 60 N force as shown. The shaft of the pedal is 26 cm long. Find the magnitude of the torque about P. The magnitude of the torque developed by applying a force F at a point with position vector r at an angle theta to r is given by |tau| = |r times F|, In terms of theta and the vector magnitudes, this can be expressed as |tau| = |r||F|

Explanation / Answer

|r|=26cm=0.26m

|F|=60N

=70o+10o=80o

|T|=|r|||F| sin

|T|=0.26*60*sin80o

|T|=15.363 N-m

magnitude of torque about point P is 15.363 N-m

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