A block of mass m slides down from rest on a rough incline of length 8m where the incline makes an angle of 30° with the horizontal. The block comes to rest on the rough horizontal surface after sliding for 4 m. The coefficient of kinetic friction on the incline is 0.30. The coefficient of kinetic friction on the horizontal surface is different from the incline, find this value using two approaches: (i) Using Newton's laws of motion and Kinematics and 30⁰ (ii) Using Work-Kinetic Energy Theorem (Give answer to 2 sig. figs.) 4 m 8 m WA

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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A block of mass m slides down from rest on a rough incline of
length 8m where the incline makes an angle of 30° with the
horizontal. The block comes to rest on the rough horizontal surface
after sliding for 4 m. The coefficient of kinetic friction on the
incline is 0.30. The coefficient of kinetic friction on the horizontal
surface is different from the incline, find this value using two approaches:
(i) Using Newton's laws of motion and Kinematics and
30⁰
(ii) Using Work-Kinetic Energy Theorem (Give answer to 2 sig. figs.)
4 m
8 m
WA
Transcribed Image Text:A block of mass m slides down from rest on a rough incline of length 8m where the incline makes an angle of 30° with the horizontal. The block comes to rest on the rough horizontal surface after sliding for 4 m. The coefficient of kinetic friction on the incline is 0.30. The coefficient of kinetic friction on the horizontal surface is different from the incline, find this value using two approaches: (i) Using Newton's laws of motion and Kinematics and 30⁰ (ii) Using Work-Kinetic Energy Theorem (Give answer to 2 sig. figs.) 4 m 8 m WA
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