The coefficient of static friction for the knee cartilage is 0.003. What is the static friction in a knee of a healthy person of 72 kg standing on both feet? Assume that g = 10 m/s². Select one: a. 2.4e5 N O b. 2.4e4 N c. 1.1 N d. 0.11 N

The coefficient of static friction for the knee cartilage is 0.003. What is the static friction in a knee of a healthy person of 72 kg standing on both feet? Assume that g = 10 m/s². Select one: a. 2.4e5 N O b. 2.4e4 N c. 1.1 N d. 0.11 N

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter4: Newton's Laws Of Motion

Section: Chapter Questions

Problem 31P: The coefficient of static friction between the 3.00-kg crate and the 35.0 incline of Figure P4.31 is...

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Question

The coefficient of static friction for the knee cartilage is 0.003. What is the static friction in a knee of a healthy person of 72
kg standing on both feet? Assume that g = 10 m/s?.
Select one:
a. 2.4e5 N
O b. 2.4e4 N
c. 1.1 N
O d. 0.11 N

Expert Solution

Step 1

Calculate the force on each leg of the person.

$F o r c e o n e a c h l e g (F) = \frac{M a s s (m) \times g}{2} = \frac{72 k g \times 10}{2} = 360 N$

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