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mujadeo
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Homework Statement
A block of mass m1 = 2 kg and a block of mass m2 = 3 kg are tied together and are pulled from rest across the floor by a force of P = 22 N. The coefficient of friction of the blocks with the floor is µ = 0.26.
m1 is on left, pulling force on right
Homework Equations
What is the tension in the string between the blocks?
The Attempt at a Solution
I've already got the acceleration of the 2 blocks (first part of prob).
This is [22N/(2kg+5kg)] - [5*9.8*.26] = 1.85m/s/s = acceleration of whole system.
I'm stuck on the tension though...but here's what i did.
F=ma
F=2*1.85 = 3.7N
Then to get the opposing (frictional) force i went
F= µn
F= .26 (2*9.8) = 3.7 = 5.1N
Then i find the difference to get net force: 5.1 - 3.7 = 1.4N
this is wrong though? please help, and thanks!