# Question Solved1 AnswerClass Management | Help HWE0411Begin Date: 9/27/2019 7:00:00 AM - Due Date: 10/8/2019 7:00:00 AM End Date: 12/11/2019 11:59:00 PM (33%) Problem 3: A block with a mass of 1.5 kg rests on a wooden plank. The coefficient of static friction between the block and the plank is fls-0.44 One end of the board is attached to a hinge so that the other end can be lifted Class Management | Help HWE0411Begin Date: 9/27/2019 7:00:00 AM - Due Date: 10/8/2019 7:00:00 AM End Date: 12/11/2019 11:59:00 PM (33%) Problem 3: A block with a mass of 1.5 kg rests on a wooden plank. The coefficient of static friction between the block and the plank is fls-0.44 One end of the board is attached to a hinge so that the other end can be lifted forming an angle, 0, with respect to the ground. Assume the X-axis is along the plank as shown in the figure. Ctheexperttan.com * 17% Part (a) Please use the interactive area below to draw the Free Body Diagram for this block, assuming it is in static equilibrium. If necessary, use Fs for the force of static friction, and Fk for the force of kinetic friction 17% Part (b) Assuming the x-direction is along the plank as shown, find an expression for the magnitude of the force of gravity in the y direction, Fe perpendicular to the plank in terms of given quantities and variables available in the palette Fe=mg cos(0) Correct! * 17% Part (c) Write an expression for the magnitude of the maximum friction force along the surface, Fs, in terms of given quantities and variables available in the palette. Grade Summary Fs = mg sin(0) Deductions 20 Potential 98% acotanud ataniji) cos(a) ( HOME cos() Submissions sin(a) cos(0) Attempts remainings sin(o) sin(0) 2% per attempt) μKI με detailed view g m t VBACKSPACE DEL CLEAR END Hint Submit Hints: 0% deduction per hint. Hints remaining: 3 give up! Feedback: 0% deduction per feedback. * 17% Part (d) Assuming the static friction is maximized, write an expression, using only the given parameters and variables available in the palette, for the sum of the forces along the plank, EF SF = mg sin(o)-mg sin(0) X Attempts Remain 17% Part (e) Write an expression for the maximum angle, , that the board can make with respect to the horizontal before the block starts moving. (Write in terms of the given parameters and variables available in the palette.) * 17% Part (1) Solve numerically for the maximum angle, Bw. in degrees. = 45 X Attempts Remain  Transcribed Image Text: Class Management | Help HWE0411Begin Date: 9/27/2019 7:00:00 AM - Due Date: 10/8/2019 7:00:00 AM End Date: 12/11/2019 11:59:00 PM (33%) Problem 3: A block with a mass of 1.5 kg rests on a wooden plank. The coefficient of static friction between the block and the plank is fls-0.44 One end of the board is attached to a hinge so that the other end can be lifted forming an angle, 0, with respect to the ground. Assume the X-axis is along the plank as shown in the figure. Ctheexperttan.com * 17% Part (a) Please use the interactive area below to draw the Free Body Diagram for this block, assuming it is in static equilibrium. If necessary, use Fs for the force of static friction, and Fk for the force of kinetic friction 17% Part (b) Assuming the x-direction is along the plank as shown, find an expression for the magnitude of the force of gravity in the y direction, Fe perpendicular to the plank in terms of given quantities and variables available in the palette Fe=mg cos(0) Correct! * 17% Part (c) Write an expression for the magnitude of the maximum friction force along the surface, Fs, in terms of given quantities and variables available in the palette. Grade Summary Fs = mg sin(0) Deductions 20 Potential 98% acotanud ataniji) cos(a) ( HOME cos() Submissions sin(a) cos(0) Attempts remainings sin(o) sin(0) 2% per attempt) μKI με detailed view g m t VBACKSPACE DEL CLEAR END Hint Submit Hints: 0% deduction per hint. Hints remaining: 3 give up! Feedback: 0% deduction per feedback. * 17% Part (d) Assuming the static friction is maximized, write an expression, using only the given parameters and variables available in the palette, for the sum of the forces along the plank, EF SF = mg sin(o)-mg sin(0) X Attempts Remain 17% Part (e) Write an expression for the maximum angle, , that the board can make with respect to the horizontal before the block starts moving. (Write in terms of the given parameters and variables available in the palette.) * 17% Part (1) Solve numerically for the maximum angle, Bw. in degrees. = 45 X Attempts Remain
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Transcribed Image Text: Class Management | Help HWE0411Begin Date: 9/27/2019 7:00:00 AM - Due Date: 10/8/2019 7:00:00 AM End Date: 12/11/2019 11:59:00 PM (33%) Problem 3: A block with a mass of 1.5 kg rests on a wooden plank. The coefficient of static friction between the block and the plank is fls-0.44 One end of the board is attached to a hinge so that the other end can be lifted forming an angle, 0, with respect to the ground. Assume the X-axis is along the plank as shown in the figure. Ctheexperttan.com * 17% Part (a) Please use the interactive area below to draw the Free Body Diagram for this block, assuming it is in static equilibrium. If necessary, use Fs for the force of static friction, and Fk for the force of kinetic friction 17% Part (b) Assuming the x-direction is along the plank as shown, find an expression for the magnitude of the force of gravity in the y direction, Fe perpendicular to the plank in terms of given quantities and variables available in the palette Fe=mg cos(0) Correct! * 17% Part (c) Write an expression for the magnitude of the maximum friction force along the surface, Fs, in terms of given quantities and variables available in the palette. Grade Summary Fs = mg sin(0) Deductions 20 Potential 98% acotanud ataniji) cos(a) ( HOME cos() Submissions sin(a) cos(0) Attempts remainings sin(o) sin(0) 2% per attempt) μKI με detailed view g m t VBACKSPACE DEL CLEAR END Hint Submit Hints: 0% deduction per hint. Hints remaining: 3 give up! Feedback: 0% deduction per feedback. * 17% Part (d) Assuming the static friction is maximized, write an expression, using only the given parameters and variables available in the palette, for the sum of the forces along the plank, EF SF = mg sin(o)-mg sin(0) X Attempts Remain 17% Part (e) Write an expression for the maximum angle, , that the board can make with respect to the horizontal before the block starts moving. (Write in terms of the given parameters and variables available in the palette.) * 17% Part (1) Solve numerically for the maximum angle, Bw. in degrees. = 45 X Attempts Remain    