43. In Example 5.7, we pushed on two blocks on a table. Sup- QC pose three blocks are in contact with one another on a frictionless, horizontal surface as shown in Figure P5.43 A horizontal force F is applied to m,. Take m m2 3.00 kg, m, = 4.00 kg, and F= 18.0 N. (a) Draw a sep- arate free-body diagram for each block. (b) Determine the acceleration of the blocks. (c) Find the resultant force on each block. (d) Find the magnitudes of the contact forces between the blocks. (e) You are working on a construction project. A coworker is nailing up plasterboard on one side of a light partition, and you are on the opposite side, providing "backing" by leaning against the wall with your back push- on it. Every hammer blow makes your back sting. The 2.00 kg, ing supervisor helps you put a heavy block of wood betwe en the wall and your back. Using the situation analyzed in parts (a) through (d) as a model, explain how this change works to make your job more comfortable. m2 m3 m1 Figure P5.43

43. In Example 5.7, we pushed on two blocks on a table. Sup- QC pose three blocks are in contact with one another on a frictionless, horizontal surface as shown in Figure P5.43 A horizontal force F is applied to m,. Take m m2 3.00 kg, m, = 4.00 kg, and F= 18.0 N. (a) Draw a sep- arate free-body diagram for each block. (b) Determine the acceleration of the blocks. (c) Find the resultant force on each block. (d) Find the magnitudes of the contact forces between the blocks. (e) You are working on a construction project. A coworker is nailing up plasterboard on one side of a light partition, and you are on the opposite side, providing "backing" by leaning against the wall with your back push- on it. Every hammer blow makes your back sting. The 2.00 kg, ing supervisor helps you put a heavy block of wood betwe en the wall and your back. Using the situation analyzed in parts (a) through (d) as a model, explain how this change works to make your job more comfortable. m2 m3 m1 Figure P5.43

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

Chapter4: The Laws Of Motion

Section: Chapter Questions

Problem 49P: In Example 4.5, we pushed on two blocks on a table. Suppose three blocks are in contact with one...

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