a) The free-body diagram for system A:
Fn = Normal force, fr = friction force, FAB = force of B on A, and m1m2g = weight of m1 and m2
A hand pushes three identical bricks as shown. The bricks are moving to the left and speeding up. System A consists of two bricks stacked together. System B consists of a single brick. System C consists of all three bricks. There is friction between the bricks and the table.
a) Draw and label separate free-body diagrams for systems A and B.
b) The vector representing the acceleration of system A is shown below. Draw the acceleration vectors for systems B and C using the same scale (shown incorrectly in figure). Explain.
c) The vector representing the net force on system A is shown below. Draw the net force vectors for systems B and C using the same scale. Explain.
d) The vector representing the frictional force on system A is shown below. Draw the remaining force vectors using the same scale.
Explain how you knew to draw the force vectors as you did.
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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 Intro to Forces + Newton's Laws concept. You can view video lessons to learn Intro to Forces + Newton's Laws. Or if you need more Intro to Forces + Newton's Laws practice, you can also practice Intro to Forces + Newton's Laws practice problems.
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Based on our data, we think this problem is relevant for Professor Nourmohammad's class at UW-SEATTLE.