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Travel & Places
Electricity and Magnetism

Name two ways that friction is harmful and two ways that friction is helpful to you when riding a bicycle?


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January 13, 2010 3:42AM

friction is what helps you propel the bike forward - if not for friction between the bike's wheels and the pavement, the tires would just spin in place and the energy you put into pedalling would not translate into forward motion.

friction can be bad if you fall off the bike - in this case the friction between your body and the pavement could scrape off your skin - ouch!

on the other hand, without that friction, you would continue moving across the ground and not stop. ...