(AP Physics) Problem 7: Pulling a block

Having problems with the 2-dimensional FBD homework?

Check out this video of my explanation to problem 7 for guidance. 

Physics Sequence

Here's the link to the physics sequence through November.

Solutions to 5+6

Here are my solutions to problems 5 and 6 from the HW due 9/24(2A) and 9/25(1B).

Keep in mind that there might be some rounding differences in Problem 5. Considering the accuracy of each force measurement, we would argue that the sum of forces in the X and the sum of the forces in the Y is 0. So the object would move at constant velocity.

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System Schema and FBD Practice Problems (1-5)

Try the practice problems (1-5) we started in class (9/21 and 9/22) and then check your answers to these solutions.

Problem 2

Problem 2

Problem 3

Problem 4

Problem 5 (Can you spot the two mistakes on this board?)