(a) If the coefficient of kinetic friction between the mass and the incline is ?? = 0.26, how long before the mass comes to rest? (b) If the coefficient of static friction is ?? = 0.29, will the mass slide back down the incline?

(a) If the coefficient of kinetic friction between the mass and the incline is ?? = 0.26, how long before the mass comes to rest? (b) If the coefficient of static friction is ?? = 0.29, will the mass slide back down the incline?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter6: Applications Of Newton's Laws

Section: Chapter Questions

Problem 83P: By what factor does the drag force on a car increase as it goes from 65 to 110 km/h?

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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

A mass is given an initial velocity ?0 = 3.4 ?/? up a 15° incline. (a) If the coefficient of
kinetic friction between the mass and the incline is ?? = 0.26, how long before the mass
comes to rest? (b) If the coefficient of static friction is ?? = 0.29, will the mass slide
back down the incline?

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