Two blocks, A and B (with mass 60 kg and 130 kg, respectively), are connected by a string, as shown in the figure below. The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between block A and the incline is 4ų = 0.24. Determine the change in the kinetic energy of block A as it moves from © to ©, a distance of 21 m up the %3D ncline (and block B drops downward a distance of 21 m) if the system starts from rest.

Two blocks, A and B (with mass 60 kg and 130 kg, respectively), are connected by a string, as shown in the figure below. The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between block A and the incline is 4ų = 0.24. Determine the change in the kinetic energy of block A as it moves from © to ©, a distance of 21 m up the %3D ncline (and block B drops downward a distance of 21 m) if the system starts from rest.

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.

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Two blocks, A and B (with mass 60 kg and 130 kg, respectively), are connected by a string, as shown in the figure below.
The pulley is frictionless and of negligible mass. The coefficient of kinetic friction between block A and the incline is
= 0.24. Determine the change in the kinetic energy of block A as it moves from © to O, a distance of 21 m up the
incline (and block B drops downward a distance of 21 m) if the system starts from rest.

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