- #1
mohabitar
- 140
- 0
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.
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 can't 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.
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 can't 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.