Tuesday
September 2, 2014

Homework Help: physics

Posted by Bella on Saturday, February 21, 2009 at 1:30pm.

there are 3 parts to my question. i need help on the last part.

1.a. A child rides a bike in a circular path with a radius of 2.0 m. The tangential speed of the bike is 2.0 m/s. The combined mass of the bike and the child is 43 kg. What is the magnitude of the bike's centripetal acceleration?

i got 2.0 m/s^2

b., What is the magnitude of the centripetal force on the bike?

i got 86 N

c. What kind of force provides the centripetal force on the bike?

i don't know,... gravitational force, friction, air resistance, or normal force

thanks for the help!

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