Problem 15.8 A 82kg person sits on a 4.0kg chair. Each leg of the chair makes co

ID: 1314207 • Letter: P

Question

Problem 15.8

A 82kg person sits on a 4.0kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.4cm in diameter.

Part A

Find the pressure exerted on the floor by each leg of the chair, assuming the weight is evenly distributed.

Express your answer using two significant figures.

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Problem 15.8

A 82kg person sits on a 4.0kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.4cm in diameter.

Part A

Find the pressure exerted on the floor by each leg of the chair, assuming the weight is evenly distributed.

Express your answer using two significant figures.

P = Pa

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(82 + 4) = 86kg.
Normal force (86 x g) = 842.8N. Divide by 4, = 210.7N. force each leg (g = 9.8 used).
1.4cm. = 0.014m.

r = 0.007
Pi r^2 = 0.00015386 m^2.
Pressure each leg = (210.7/0.00015386) =1369426.7515 N/m^2