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Chair leg pressure problem...geez
A 63kg person sitting on 3.5kg chair. Four legs contact the floor, each leg with circle 1.2cm in diameter. Find pressure exerted on floor by each leg of chair (weight evenly distributed).
[{(person mass) + (chair mass)} * (9.81)] / pi (radius contact circle in meters)(4 chair legs)
63kg + 3.5kg = 66.5kg total
1.2cm diameter = 0.6cm radius = 0.006m radius
area = 0.00011304 m^2 each leg
area total four chair legs = 0.00045216 m^2
P = F/A
{(66.5)(9.81)} / 0.00045216 = 1442774.68 N/m^2
...thus for one leg = 360693.67 N/m^2
answer of 3.6E5 and 3.61E5 incorrect.
Answer unit requested is Pa.
What am I missing here?
Homework Statement
A 63kg person sitting on 3.5kg chair. Four legs contact the floor, each leg with circle 1.2cm in diameter. Find pressure exerted on floor by each leg of chair (weight evenly distributed).
Homework Equations
[{(person mass) + (chair mass)} * (9.81)] / pi (radius contact circle in meters)(4 chair legs)
The Attempt at a Solution
63kg + 3.5kg = 66.5kg total
1.2cm diameter = 0.6cm radius = 0.006m radius
area = 0.00011304 m^2 each leg
area total four chair legs = 0.00045216 m^2
P = F/A
{(66.5)(9.81)} / 0.00045216 = 1442774.68 N/m^2
...thus for one leg = 360693.67 N/m^2
answer of 3.6E5 and 3.61E5 incorrect.
Answer unit requested is Pa.
What am I missing here?