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posted by  kbwalters on 11/7/2009 1:59:20 AM  |  status: Closed  |  Earned Karma: 25

Centripetal force

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Algebra Based Physics N/A N/A N/A 11/8/2009 at 11:00:00 AM
Question Details:
The average nascar race car weighs 3400 lbs. At a recent nascar race teh cars went flying around the banked curves at Daytona Int. Speedway. The banking of the curves are 31 degrees.  a. What is the centripetal force on the car keeping it going around the curve at a speed of 200 mph?
b. Suppose teh curve was not banked. What would be the centripetal force on the car keeping it going around the curve at a speed of 200 mph.
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posted by E=mc*c (MNV) on 11/7/2009 4:38:45 AM  |  status: Live
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Response Details:
The average nascar race car weighs 3400 lbs. At a recent nascar race teh cars went flying around the banked curves at Daytona Int. Speedway. The banking of the curves are 31 degrees.  a. What is the centripetal force on the car keeping it going around the curve at a speed of 200 mph?
200mph=89.4m/sec
radius of the curve=89.4*89.4/9.8*tan31=1357.43m
3400lb=1542.2kg
now centripetal force=mv*v/r=1542.2*89.4*89.4/1357.43=9080.2N
b. Suppose the curve was not banked. What would be the centripetal force on the car keeping it going around the curve at a speed of 200 mph.
centripetal force remains constant.
centripetal force=mv*v/r=1542.2*89.4*89.4/1357.43=9080.2N
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