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To practice Problem-Solving Strategy 6.1 for Newtonian mechanics problems. A box of mass 3.0 kgkg slides down a rough vertical wall. The gravitational force on the box is 29.4 NN .  When the box reaches a speed of 2.5 m/sm/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 FpFp = 23.0 NN , as shown in (Figure 1). There is now a frictional force between the box and the wall of magnitude 13.0 NN . How fast is the box sliding 2.8 ss after you started pushing on it?   Find the box's speed vfvf at 2.8 ss after you first started pushing on it.

To practice Problem-Solving Strategy 6.1 for Newtonian mechanics problems. A box of mass 3.0 kgkg slides down a rough vertical wall. The gravitational force on the box is 29.4 NN .  When the box reaches a speed of 2.5 m/sm/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 FpFp = 23.0 NN , as shown in (Figure 1). There is now a frictional force between the box and the wall of magnitude 13.0 NN . How fast is the box sliding 2.8 ss after you started pushing on it?   Find the box's speed vfvf at 2.8 ss after you first started pushing on it.

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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To practice Problem-Solving Strategy 6.1 for Newtonian mechanics problems.
A box of mass 3.0 kgkg slides down a rough vertical wall. The gravitational force on the box is 29.4 NN .  When the box reaches a speed of 2.5 m/sm/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 FpFp = 23.0 NN , as shown in (Figure 1). There is now a frictional force between the box and the wall of magnitude 13.0 NN . How fast is the box sliding 2.8 ss after you started pushing on it?
 
Find the box's speed vfvf at 2.8 ss after you first started pushing on it.
I Review I Constants Learning Goal: Submit Previous Answers To practice Problem-Solving Strategy 6.1 for Newtonian mechanics problems. Correct 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 F, = 23.0 N , as all the vectors in your free-body diagram were drawn with their correct relative lengths, their vector sum Fnet =E; F; would provide some quantitative information about the box's acceleration. Since this is not the case here, you cannot obtain any further information about the box's acceleration without first performing some calculations based on Newton's second law.Note that in the diagram above, a coordinate system was established so that the positive x axis points rest of this problem. Keep in mind that you are trying to find the box's speed 2.8 s after starting to push on it. the right and the positive y axis points upward. This is the same coordinate system used throughout the 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 2.8 s after you started pushing on it? Solve Part C Find the box's speed vf at 2.8 s after you first started pushing on it. • View Available Hint(s) ΑΣΦ ? Figure Vf = 3.2 m/s 1 of 1 Submit Previous Answers X Incorrect; Try Again; 2 attempts remaining Assess 45° Part D Complete previous part(s) Provide Feedback Next >
Transcribed Image Text:I Review I Constants Learning Goal: Submit Previous Answers To practice Problem-Solving Strategy 6.1 for Newtonian mechanics problems. Correct 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 F, = 23.0 N , as all the vectors in your free-body diagram were drawn with their correct relative lengths, their vector sum Fnet =E; F; would provide some quantitative information about the box's acceleration. Since this is not the case here, you cannot obtain any further information about the box's acceleration without first performing some calculations based on Newton's second law.Note that in the diagram above, a coordinate system was established so that the positive x axis points rest of this problem. Keep in mind that you are trying to find the box's speed 2.8 s after starting to push on it. the right and the positive y axis points upward. This is the same coordinate system used throughout the 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 2.8 s after you started pushing on it? Solve Part C Find the box's speed vf at 2.8 s after you first started pushing on it. • View Available Hint(s) ΑΣΦ ? Figure Vf = 3.2 m/s 1 of 1 Submit Previous Answers X Incorrect; Try Again; 2 attempts remaining Assess 45° Part D Complete previous part(s) Provide Feedback Next >
lew I Con Learning Goal: To practice Problem-Solving Strategy 6.1 for Newtonian mechanics problems. 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. 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 F, = 23.0 N , as 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. ? 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 2.8 s after you started pushing on it? No elements selected y F, Figure 1 of 1 Select the elements from the list and add them to the canvas setting the appropriate attributes. 45° Submit Previous Answers
Transcribed Image Text:lew I Con Learning Goal: To practice Problem-Solving Strategy 6.1 for Newtonian mechanics problems. 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. 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 F, = 23.0 N , as 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. ? 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 2.8 s after you started pushing on it? No elements selected y F, Figure 1 of 1 Select the elements from the list and add them to the canvas setting the appropriate attributes. 45° Submit Previous Answers
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