Problem 12: A box slides down a plank of length d that makes an angle of 0 with thehorizontal, as shown. The kinetic and static coefficients of friction are µk and us, respectively.Omin = 1Part (a) Enter an expression for the minimum angle at which the box, if initially at rest, will begin to slide.^^^ 4acotan(us) atan(us) cos(a) ( ) 7 8 9cos(p) cos(0) sin(a)5 6sin(o) sin(0)0α12 3MkdtHints: 0% deduction per hint. Hints remaining: 2SubmitmHint+*0BACKSPACE DELHOMEFeedbackENDCLEARI give up!Feedback: 0% deduction per feedback.m0Part (b) Enter an expression for the nonconservative work done by kinetic friction as the block slides down the plank. Assume the box starts from rest, andis large enough that it will slide down the plank.the anglePart (c) For a plank of any length, at what angle, in degrees, will the final speed of the box at the bottom of the plank be 0.51 times the final speed of thebox when there is no friction present? Assume μ = 0.39.

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Description: Problem 12: A box slides down a plank of length d that makes an angle of 0 with thehorizontal, as shown. The kinetic and static coefficients of friction are µk and us, respectively.Omin = 1Part (a) Enter an expression for the minimum angle at which

Expression for the non conservative work done is a)From the free body diagram ----(1)since the…

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Problem 12: A box slides down a plank of length d that makes an angle of 0 with the horizontal, as shown. The kinetic and static coefficients of friction are μ and μs, respectively. Omin = = | Part (a) Enter an expression for the minimum angle at which the box, if initially at rest, will begin to slide. acotan(us) atan(us) cos(a) cos(p) cos(0) sin(a) sin(o) sin(0) Mk 0 α d g t Submit m Hint () 7 8 9 HOME ↑^^ 4 5 6 1 1 2 3 + 0 VO BACKSPACE DEL - . Feedback END CLEAR I give up! Feedback: 0% deduction per feedback. m 0 Hints: 0% deduction per hint. Hints remaining: 2 Part (b) Enter an expression for the nonconservative work done by kinetic friction as the block slides down the plank. Assume the box starts from rest, and is large enough that it will slide down the plank. the angle Part (c) For a plank of any length, at what angle, in degrees, will the final speed of the box at the bottom of the plank be 0.51 times the final speed of the box when there is no friction present? Assume k = 0.39.

Problem 12: A box slides down a plank of length d that makes an angle of 0 with the horizontal, as shown. The kinetic and static coefficients of friction are μ and μs, respectively. Omin = = | Part (a) Enter an expression for the minimum angle at which the box, if initially at rest, will begin to slide. acotan(us) atan(us) cos(a) cos(p) cos(0) sin(a) sin(o) sin(0) Mk 0 α d g t Submit m Hint () 7 8 9 HOME ↑^^ 4 5 6 1 1 2 3 + 0 VO BACKSPACE DEL - . Feedback END CLEAR I give up! Feedback: 0% deduction per feedback. m 0 Hints: 0% deduction per hint. Hints remaining: 2 Part (b) Enter an expression for the nonconservative work done by kinetic friction as the block slides down the plank. Assume the box starts from rest, and is large enough that it will slide down the plank. the angle Part (c) For a plank of any length, at what angle, in degrees, will the final speed of the box at the bottom of the plank be 0.51 times the final speed of the box when there is no friction present? Assume k = 0.39.

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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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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows:

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Question

Problem 12: A box slides down a plank of length d that makes an angle of 0 with the
horizontal, as shown. The kinetic and static coefficients of friction are µk and us, respectively.
Omin = 1
Part (a) Enter an expression for the minimum angle at which the box, if initially at rest, will begin to slide.
^^^ 4
acotan(us) atan(us) cos(a) ( ) 7 8 9
cos(p) cos(0) sin(a)
5 6
sin(o) sin(0)
0
α
1
2 3
Mk
d
t
Hints: 0% deduction per hint. Hints remaining: 2
Submit
m
Hint
+
*
0
BACKSPACE DEL
HOME
Feedback
END
CLEAR
I give up!
Feedback: 0% deduction per feedback.
m
0
Part (b) Enter an expression for the nonconservative work done by kinetic friction as the block slides down the plank. Assume the box starts from rest, and
is large enough that it will slide down the plank.
the angle
Part (c) For a plank of any length, at what angle, in degrees, will the final speed of the box at the bottom of the plank be 0.51 times the final speed of the
box when there is no friction present? Assume μ = 0.39.

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