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April 18, 2014

Homework Help: physics

Posted by anonymous on Wednesday, March 3, 2010 at 5:06am.

Three blocks are in contact with each other on a frictionless, horizontal surface, as shown below. A horizontal force is applied to m1. Take m1 = 2.00 kg, m2 = 3.00 kg, m3 = 5.00 kg, and F = 22.0 N
Find the acceleration of the blocks
_______m/s2 (to the right)

(c) Find the resultant force on m1.
_______N (to the right)
Find the resultant force on m2.
_______ N (to the right)
Find the resultant force on m3.
_______ N (to the right)

(d) Find the magnitude of the contact force between m1 and m2.
_______N
Find the magnitude of the contact force between m2 and m3.
_______ N

(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 pushing on it. Every blow makes your back sting. The supervisor helps you to put a heavy block of wood between the wall and your back. Using the situation analyzed in parts (b), (c), and (d) as a model, explain how this works to make your job more comfortable.
_______________________________________
___________________________________

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