Three blocks, each of mass 8 kg are on a frictionless table. A hand pushes on the left most box (A) such that the three boxes accelerate in the positive horizontal direction as shown at a rate of a = 0.7 m/s2.(adsbygoogle = window.adsbygoogle || []).push({});

Here are the ones I got right:

1. What is the magnitude of the force on block A from the hand?

Answer: 16.9-Correct

2. What is the net horizontal force on block A ?

Answer:5.6-Correct

And now the ones I cant figure out:

3. What is the horizontal force on block A due to block B?

and

4. What is the net horizontal force on block B?

For number 3, I tried subtracting (0.7*3) from total force of 16.9 but that was incorrect. Not sure how to approach this one.

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# Homework Help: Basic 3 Block Question

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