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January 31, 2015

January 31, 2015

Posted by **Linda** on Tuesday, November 16, 2010 at 2:20am.

Assuming the mass of bicycle plus cyclist is 95 kg, calculate how much work must be done against gravity.

If each complete revolution of the pedals moves the bike 5.6 m along its path, calculate the average force that must be exerted on the pedals tangent to their circular path. Neglect work done by friction and other losses. The pedals turn in a circle of diameter 39 cm.

- Physics -
**Cassie**, Thursday, November 18, 2010 at 11:31amthe work done by gravity is mgh so 95*9.8*170=158270 J

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