- Make a choice about which one you agree with and why?
- Sketch a continuation of the graph after the string is cut until it stops?
- are there any inconsistencies with the graph and the motion of the object?
- Explain?
Class MATERIALS:
Graphing Calculator
Compostition Notebook
Organizational FOLDER/BINDER
TEXT BOOK FUNDAMENTALS OF PHYSICS
HALIDAY RESNIK
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ReplyDeleteThe possibilities we discussed in class was that, one graph in which acceleration stays at zero until the force of tension is greater than the force of friction and one graph in which the acceleration is negative before that point. In specific situations I agree with both graphs, the graph with a negative acceleration in cases when the object has a positive velocity and the graph with a constant zero acceleration when the velocity is zero. The force of friction acts against the force of motion. This means when the velocity is zero friction does not need to act upon the object as it is stationary, but if the velocity is positive, the force of friction will decelerate the object until it stops moving.
ReplyDelete(This is a continuation of the F v A graph prior to the x-axis) A sketch of the continuation will look like either of the two graphs I previously described. If the object had a positive velocity, prior to the x-axis acceleration graph would be increasingly negative the farther left it gets. If the object was stationary, the acceleration would remain constantly zero no matter how negative the force became.
The inconsistency with the graph is that it changes depending on if the velocity is positive or zero. The change in acceleration the x-axis is dependent on the velocity. As the velocity is not the independent variable, in a consistent function it should have no affect on the acceleration.