The coefficient of kinetic friction between a box and the floor is H = 0.16 and the coefficient of static friction is u = 2.04. (a) Calculate the ratio of static to kinetic friction force if m = 9 kg. (b) Will the ratio change if the value of m is changed but 4, still equals 2.04? Yes • No

The coefficient of kinetic friction between a box and the floor is H = 0.16 and the coefficient of static friction is u = 2.04. (a) Calculate the ratio of static to kinetic friction force if m = 9 kg. (b) Will the ratio change if the value of m is changed but 4, still equals 2.04? Yes • No

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.

Question

The coefficient of kinetic friction between a box and the floor is \( \mu_k = 0.16 \) and the coefficient of static friction is \( \mu_s = 2.0 \mu_k \).

**(a)** Calculate the ratio of static to kinetic friction force if \( m = 9 \, \text{kg} \).

[Blank space for answer]

**(b)** Will the ratio change if the value of \( m \) is changed but \( \mu_s \) still equals \( 2.0 \mu_k \)?

- Yes
- No

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