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Name: Force vs. Time on a Dynamics Cart

Category: Dynamics

Date Added: 03 December 2014 - 10:59 AM

Submitter: Flipping Physics

Short Description: None Provided

When the forces in a free body diagram don’t change students often think that Newton’s Second Law will yield the same results. This demonstration shows that is not true. This is a step-by-step analysis of tension force as a function of time for a dynamics cart in motion on a horizontal track.

Content Times:

0:13 Reviewing known information

0:47 The three parts in this demonstration

1:22 Drawing the two free body diagrams

2:27 Understanding the free body diagrams

3:12 Identifying the String Direction

4:08 Finding the Tension Force during Part #1

6:06 Theoretical vs. Experimental Tension Force during Part #1

6:28 Finding the Tension Force during Part #2

7:52 Theoretical vs. Experimental Tension Force during Part #2

8:13 Finding the Maximum Acceleration during Part #3

9:37 Instantaneous vs. Average

10:21 All the graphs sequentially

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