Newton's Second Law problems: Multiple objects (2)

Описание: Physics: How to solve force problems involving more than one object. Two objects connected by a rope. Two objects hanging from a pulley. Two objects in contact with each other. Newton's Third Law. Finding acceleration and tension

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Playlist containing all the videos in this series:
   • Newton's Second Law problems: Multiple obj...  

This video series builds on the concepts covered in my series "Newton's Second Law problems, explained step by step":    • Newton's Second Law problems, explained st...  

Newton's Second Law problems with multiple objects handout: http://www.freelance-teacher.com/Newt...

Forces handout: http://www.freelance-teacher.com/Newt...

General one-dimensional kinematics handout: http://www.freelance-teacher.com/gene...

Problems discussed in this video series: http://www.freelance-teacher.com/Newt...

Brief answers to the problems: http://www.freelance-teacher.com/Newt...

Brief solutions to the problems: http://www.freelance-teacher.com/Newt...

Full solutions to the problems: http://www.freelance-teacher.com/Newt...

If you find that the video moves too slowly, you can simply try the problems in the Problems document, check the solutions in the Solutions documents, and, if necessary, skip to any particular parts of the videos that cover parts of the solutions that you find confusing.

TABLE OF CONTENTS FOR VIDEO (2)
0:00 Intro
0:33 Preliminary steps
1:22 Plan for solving the problem
3:58 Free-body diagrams
6:08 Force directions
6:43 Force magnitudes
8:12 Choosing axes
9:34 Force components
11:18 Newton’s Second Law equations
11:54 a­_1y = a_2y
13:47 Solving the Newton’s 2nd Law equations
15:23 Kinematics intro
16:23 Constant velocity, or constant acceleration?
17:37 Kinematics sketch
18:53 Initial velocity
20:13 Kinematics “setup”
22:50 Choosing a kinematics equation
24:25 Answering the question
26:28 Do our results make sense?
28:37 Why a_1y = a_2y
32:16 Recap

TABLE OF CONTENTS FOR THE SERIES
(1) Two masses connected by a rope
(2) Two masses hanging from a pulley
(3) Two masses in contact with each other
(4) Two masses in contact with each other