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 FpFpF_p = 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 2.6 s after you started pushing on it?

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 FpFpF_p = 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 2.6 s after you started pushing on it?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter6: Energy Of A System

Section: Chapter Questions

Problem 15OQ

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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? 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?
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