Force vs. Time on a Dynamics Cart
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. 0:00 Intro 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 Multilingual? Please help translate Flipping Physics videos! http://www.flippingphysics.com/transl... Want Lecture Notes? http://www.flippingphysics.com/force-... Next Video: A Three Force Example of Newton's 2nd Law with Components http://www.flippingphysics.com/three-... Previous Video: Introductory Newton's 2nd Law Example Problem and Demonstration http://www.flippingphysics.com/second... 1¢/minute: http://www.flippingphysics.com/give.html
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