FBD for the bottom block, calling the top block A and the bottom block B:
ΣF = T fk(A on B) - fk(ground on B) = ma
The 1.0 kg block in the figure below is tied to the wall with a rope. It sits on top of the 2.0 kg block. The lower block is pulled to the right with a tension force of 40 N. The coefficient of kinetic friction at both the lower and upper surfaces of the 2.0 kg block is k = 0.35.
What is the acceleration of the 2.0 kg block?
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What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Friction concept. If you need more Friction practice, you can also practice Friction practice problems.