AP Physics Workbook 2.K Acceleration of Systems

This is the video that cover the section 2.K in the AP Physics 1 Workbook.
Topic over:
1. Atwood Machine
2. Acceleration of a block hanging

This is a packet given to student by the CollegeBoard and for student to do. Student are to give the packet an honesty attempt and effort. This video is created to supplement the learning and to provide assistance to student in the learning process and is not suppose to be use as a cheating tool.

[asvah-h]

thank you so much, you’re literally a blessing in disguise

[Gqrfield]

Wouldn't case 1 have friction in the free body diagram?

[trx]

In case 1 shouldnt 10 times the acceleration be equal to the sum of the forces on the 10kg block? Which if u consider the tension to be 98 the net force would be 98-mg.

[kennethtiu]

In part B i you said something about the M being 0 would give a tension of 98N I disagree, I believe if M was 0 T would also be 0.
If M was 0 there would be no normal force, so no force of friction, also if it were 0 there would be no need for any tension in the string to accelerate the 0 mass. I just don't get that explanation. I believe that in case 2 the T=98N. In case 1 T = 98N - ma.

[acey]

Thank you for your videos. You really helped me out with this one