In physics, you will often encounter situations where you can choose which System you will analyze. While your choice of system cannot change any physically observable quantity, it can often have a big impact on how your analysis proceeds and what it can reveal about the situation.
ExercisesActivity: From a Certain Point of View
1.
The figure below shows a green mentor perched on the shoulders of his orange trainee. An external Force (not shown) acts on the trainee, causing both him and his mentor to accelerate upwards.
Figure5.2.1.
(a)
Start by considering the mentor and his trainee as separate systems. Sketch a free-body diagram for each system. Explicitly identify any forces (across both diagrams) that have equal magnitude.