- #1
tharock220
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Homework Statement
An 8kg block rests on an inclined plane where theta=37 degrees. The coefficient of kinetic friction on the plane is .23. The 8kg block is connect by a massless, frictionless pully to a hanging 16kg block. The blocks are released from rest. What is the acceleration.
Homework Equations
I think F=ma
The Attempt at a Solution
So I used F=ma for each block.
8kg block.
T-sin(37)*8*9.8-cos(37)*8*9.8*.23=8*a eq1
16kg block.
T-9.8*16=-16*a eq2
so eq1-eq2 =
9.8*16-sin(37)*8*9.8-cos(37)*8*9.8*.23=24a.
so 95.2=24a
leaving a=3.97.
When we checked the answer it said a = 1.3. What are we doing wrong?