At t = 0, a cart of mass m = 5 kg starts rolling down an incline, making an angle α = 20o with the horizontal. Initially the cart rolls down with no friction, but after traveling a distance of ∆ = 10 m it encounters a rough surface, where the coefficient of friction is k = 0.45. Find the acceleration of the cart along the incline (positive direction is downhill) after it encounters the rough surface. A.9.8 m/s2 B.9.2 m/s2 C.7.7 m/s2 D.3.6 m/s2 E.3.4 m/s2 F.-0.8 m/s2
At t = 0, a cart of mass m = 5 kg starts rolling down an incline, making an angle α = 20o with the horizontal. Initially the cart rolls down with no friction, but after traveling a distance of ∆ = 10 m it encounters a rough surface, where the coefficient of friction is k = 0.45. Find the acceleration of the cart along the incline (positive direction is downhill) after it encounters the rough surface. A.9.8 m/s2 B.9.2 m/s2 C.7.7 m/s2 D.3.6 m/s2 E.3.4 m/s2 F.-0.8 m/s2
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter5: Newton's Laws Of Motion
Section: Chapter Questions
Problem 74PQ: Starting from rest, a rectangular toy block with mass 300 g slides in 1.30 s all the way across a...
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At t = 0, a cart of mass m = 5 kg starts rolling down an incline, making an angle α = 20o with the horizontal. Initially the cart rolls down with no friction, but after traveling a distance of ∆ = 10 m it encounters a rough surface, where the coefficient of friction is k = 0.45.
Find the acceleration of the cart along the incline (positive direction is downhill) after it encounters the rough surface.
A.9.8 m/s2
B.9.2 m/s2
C.7.7 m/s2
D.3.6 m/s2
E.3.4 m/s2
F.-0.8 m/s2
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