Physics
Ok I got a question I asked before except there are other parts that I didn't ask so here we go
Three blocks on a frictionless horizontal surface are in contact with each other
A force F is applied to block 1 (mass m1).
Draw a freebody diagram for each block
ok I did this
the acceleration of the system in terms of m1, m2, m3
I just found the acceleration of each block
a of m1 = m1^1 F
a of m2 = (m1 + m2)^1 F
a of m3 = (m1 + m2 + m3)^1 F
did I do that right?
the net force on each block
how do I do this???
the force of contact that each block exerts on its neighbor
How do I do this???

If you are pushing on block m1, I assume the other blocks are in front of it; otherwise m2 and m3 would be left behind and the solution would be trivial
(a1 = F/m1 and a2 = a3 = 0).
Therefore I would assume that
a1 = F/(m1 + m2 + m3)
The other blocks, being in front of m1, would accelerate at the same rate.
For the contact force, start with block m3, for which you know the acceleration AND the mass. use F3 = a3/m3 = a1/m3
Force F3 acts backwards on m2, and another force F2 acts forwards on it. Use that fact and a FBD to solve for F2.posted by drwls

what's FBD how do i solve for F2
posted by QUESTION

FBD..free body diagram.
posted by bobpursley

what's the contact force on m1
posted by ANOTHER QUESTION

F  F2 = m1*a1
Get F2 from the FBD and Newton's 2nd law for block 2, as explained earlier.posted by drwls
Respond to this Question
Similar Questions

Physics
Two blocks (M1 = 2.57 kg and M2 = 6.71 kg) are in contact on a frictionless, horizontal tabletop. An external force, $\vec{F}$, is applied to block 1, and the two blocks are moving with a constant acceleration of 2.59 m/s2. What 
Physics
Three blocks on a frictionless horizontal surface are in contact with each other A force F is applied to block 1 (m1) Draw a free body diagram for each block ok for the diagram is the force F applied horizontal to mass one does 
Physics
Two blocks are in contact on a frictionless table. A horizontal force F is applied to M2, as shown. If M1 = 1.06 kg, M2 = 3.80 kg, and F = 4.85 N, find the size of the contact force between the two blocks. If instead an equal but 
Physics
Two blocks are in contact on a frictionless table. A horizontal force F is applied to M2, as shown. If M1 = 1.06 kg, M2 = 3.80 kg, and F = 4.85 N, find the size of the contact force between the two blocks. If instead an equal but 
Physics
Two blocks are in contact on a frictionless table. A horizontal force F is applied to M2, as shown. If M1 = 1.06 kg, M2 = 3.80 kg, and F = 4.85 N, find the size of the contact force between the two blocks. If instead an equal but 
Physics
Two blocks are in contact on a frictionless table. A horizontal force F is applied to M2, as shown. If M1 = 1.06 kg, M2 = 3.80 kg, and F = 4.85 N, find the size of the contact force between the two blocks. If instead an equal but 
Physics
Two blocks are in contact on a frictionless table. A horizontal force F is applied to M2, as shown. If M1 = 1.06 kg, M2 = 3.80 kg, and F = 4.85 N, find the size of the contact force between the two blocks. If instead an equal but 
Physics
Two blocks are in contact on a frictionless table. A horizontal force F is applied to M2, as shown. If M1 = 1.06 kg, M2 = 3.80 kg, and F = 4.85 N, find the size of the contact force between the two blocks. If instead an equal but 
physics
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 
physics
Two blocks of masses m1 = 4.00 kg and m2 = 3.00 kg are placed in contact with each other on a frictionless horizontal surface. A constant force F = 9.00 N is applied to the block of mass m1. a) Determine the magnitude of the