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Learning Goal: A box of mass 3.0 kg slides down a rough vertical wall. The gravitational force on the box is 29.4 N. When the box reaches a speed of 2.5 m/s, you start pushing on one edge of the box at a 45° angle (use degrees in your calculations throughout this problem) with a constant force of magnitude F₁ = 23.0 N, as shown in ( Figure 1). There is now a frictional force between the box and the wall of magnitude 13.0 N. How fast is the box sliding 3.0 s after you started pushing on it? Part A Using our simplified model, in which we know that the forces are constant (but we don't know what their magnitudes are), which, perhaps more than one, of the following motion diagrams could be a reasonable representation of the motion of the box? ↑ 24 A te -> a B at с Ꭰ Figure 1 of 1 45° 165 start to push a=0 at Check all that apply. A B C D fe ta to Submit Previous Answers Correct Part B Still using our simplified model (in which we do not know the magnitudes of the forces), draw a free-body diagram showing all the forces acting on the box after you start pushing on it. The positive y axis is taken to be upward. The black dot represents the box. Since our model is about having constant forces of unknown magnitude, you do not need to draw the vectors to scale, but your final diagram should be physically reasonable. Draw the vectors starting at the black dot. The location and orientation of the vectors will be graded. The relative lengths of the vectors will not be graded. + 血 No elements selected y i ? x

Learning Goal: A box of mass 3.0 kg slides down a rough vertical wall. The gravitational force on the box is 29.4 N. When the box reaches a speed of 2.5 m/s, you start pushing on one edge of the box at a 45° angle (use degrees in your calculations throughout this problem) with a constant force of magnitude F₁ = 23.0 N, as shown in ( Figure 1). There is now a frictional force between the box and the wall of magnitude 13.0 N. How fast is the box sliding 3.0 s after you started pushing on it? Part A Using our simplified model, in which we know that the forces are constant (but we don't know what their magnitudes are), which, perhaps more than one, of the following motion diagrams could be a reasonable representation of the motion of the box? ↑ 24 A te -> a B at с Ꭰ Figure 1 of 1 45° 165 start to push a=0 at Check all that apply. A B C D fe ta to Submit Previous Answers Correct Part B Still using our simplified model (in which we do not know the magnitudes of the forces), draw a free-body diagram showing all the forces acting on the box after you start pushing on it. The positive y axis is taken to be upward. The black dot represents the box. Since our model is about having constant forces of unknown magnitude, you do not need to draw the vectors to scale, but your final diagram should be physically reasonable. Draw the vectors starting at the black dot. The location and orientation of the vectors will be graded. The relative lengths of the vectors will not be graded. + 血 No elements selected y i ? x

College Physics
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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Learning Goal: A box of mass 3.0 kg slides down a rough vertical wall. The gravitational force on the box is 29.4 N. When the box reaches a speed of 2.5 m/s, you start pushing on one edge of the box at a 45° angle (use degrees in your calculations throughout this problem) with a constant force of magnitude F₁ = 23.0 N, as shown in ( Figure 1). There is now a frictional force between the box and the wall of magnitude 13.0 N. How fast is the box sliding 3.0 s after you started pushing on it? Part A Using our simplified model, in which we know that the forces are constant (but we don't know what their magnitudes are), which, perhaps more than one, of the following motion diagrams could be a reasonable representation of the motion of the box? ↑ 24 A te -> a B at с Ꭰ Figure 1 of 1 45° 165 start to push a=0 at Check all that apply. A B C D fe ta to Submit Previous Answers Correct
Transcribed Image Text:Learning Goal: A box of mass 3.0 kg slides down a rough vertical wall. The gravitational force on the box is 29.4 N. When the box reaches a speed of 2.5 m/s, you start pushing on one edge of the box at a 45° angle (use degrees in your calculations throughout this problem) with a constant force of magnitude F₁ = 23.0 N, as shown in ( Figure 1). There is now a frictional force between the box and the wall of magnitude 13.0 N. How fast is the box sliding 3.0 s after you started pushing on it? Part A Using our simplified model, in which we know that the forces are constant (but we don't know what their magnitudes are), which, perhaps more than one, of the following motion diagrams could be a reasonable representation of the motion of the box? ↑ 24 A te -> a B at с Ꭰ Figure 1 of 1 45° 165 start to push a=0 at Check all that apply. A B C D fe ta to Submit Previous Answers Correct
Part B Still using our simplified model (in which we do not know the magnitudes of the forces), draw a free-body diagram showing all the forces acting on the box after you start pushing on it. The positive y axis is taken to be upward. The black dot represents the box. Since our model is about having constant forces of unknown magnitude, you do not need to draw the vectors to scale, but your final diagram should be physically reasonable. Draw the vectors starting at the black dot. The location and orientation of the vectors will be graded. The relative lengths of the vectors will not be graded. + 血 No elements selected y i ? x
Transcribed Image Text:Part B Still using our simplified model (in which we do not know the magnitudes of the forces), draw a free-body diagram showing all the forces acting on the box after you start pushing on it. The positive y axis is taken to be upward. The black dot represents the box. Since our model is about having constant forces of unknown magnitude, you do not need to draw the vectors to scale, but your final diagram should be physically reasonable. Draw the vectors starting at the black dot. The location and orientation of the vectors will be graded. The relative lengths of the vectors will not be graded. + 血 No elements selected y i ? x
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