Force pushes and pulls two blocks at an angle

AI Thread Summary
A force of 23.52 N is applied to two blocks with frictionless vertical surfaces and a horizontal friction coefficient of 0.29. The discussion involves calculating the acceleration of the blocks using free body diagrams and the equations of motion. Key forces include normal force, gravitational force, and frictional force, with emphasis on resolving these into their components. The user successfully identifies the necessary components for the calculations and expresses gratitude for the assistance received. The focus remains on understanding the net forces acting on the blocks to determine their acceleration.
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Homework Statement


A force of 23.52 N pushes and pulls to blocks
as shown in the figure below. The vertical
contact surfaces between the two blocks are
frictionless. The contact between the blocks
and the horizontal surface has a coefficient of
friction of 0.29.
The acceleration of gravity is 9.8 m/s2
What is the magnitude a of the acceleration
of the blocks?
Answer in units of m/s2



Homework Equations


I know its the sum of Fy=N-mg=0 => N=mg
and the sum of Fx= -fk=max



The Attempt at a Solution


fk=ukN=> fk=20.4624
but I do not know how to plug in Fcostheta or Fsintheta and I know those need to be used somewhere

[PLAIN]http://img685.imageshack.us/img685/9849/006sl.png
 
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Create a free body diagram for each block, and then use ∑F=manet to find the resulting acceleration.

What forces are acting on each block?
How can you use these forces to find the net force on the blocks in the x direction?
 
jhae2.718 said:
Create a free body diagram for each block, and then use ∑F=manet to find the resulting acceleration.

What forces are acting on each block?
How can you use these forces to find the net force on the blocks in the x direction?

On the first block in the y direction there is N and m1g
in the x direction there is fk and F...
On the second block in the y direction there is Fsintheta, N, and m2g
in the x direction there is fk and Fcostheta...

right?
 
gap0063 said:
I know its the sum of Fy=N-mg=0 => N=mg
The sum of the vertical components on each block must add to zero, but N and mg are not necessarily the only forces with vertical components.
and the sum of Fx= -fk=max
The sum of horizontal forces must equal max. What are the horizontal forces acting on this system?
 
Doc Al said:
The sum of the vertical components on each block must add to zero, but N and mg are not necessarily the only forces with vertical components.

The sum of horizontal forces must equal max. What are the horizontal forces acting on this system?

Thanks! figured out the other components!

Thank you for you're help on my other problems too you're a live saver
 
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