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Helppp! I need somebody. helppp!! not just anybody. ok fine anybody just help please.

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Date Posted: 5/14/2008 3:17:04 AM  Status: Live
Helppp! I need somebody. helppp!! not just anybody. ok fine anybody just help please.
Course Textbook Chapter Problem
Algebra Based Physics Physics (3rd) by Walker 15 8
Question Details:
A 72-kg person sits on a 3.8 kg chair. each leg of the chair makes contact with the floor in a circle that is 1.3 cm in diameter. Find the pressure exerted on the floor by each leg of the chair, assuming the weight is evenly distributed. 

the Area of the circle is 1.33 cm squared.

please helpppp!

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Oracle
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Date Posted: 5/14/2008 3:22:55 AM  Status: Live
Asker's Rating: Lifesaver   
Response:
total force exerted on the floor F = (72 + 3.8) * 9.8 N = 742.8 N
force exerted on the floor by each leg = F/4 = 185.7 N
pressure = 185.7/1.33 N/cm2 = 140 N/cm2
 



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