- #1
- 2,571
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I don't get why this is the same??
[PLAIN]http://img577.imageshack.us/img577/1213/33472409.jpg [Broken]
[PLAIN]http://img695.imageshack.us/img695/2961/93055936.jpg [Broken]
SOLUTIONS
[PLAIN]http://img213.imageshack.us/img213/1912/64111316.jpg [Broken]
[PLAIN]http://img804.imageshack.us/img804/2032/78965826.jpg [Broken]
Here is my first question, why did they have two different 'h's? I don't understand why they substitute the H in part a into b, isn't that different? The H is without friction and the H in part b is the one with friction.
Now for part c
[PLAIN]http://img152.imageshack.us/img152/2179/28718730.jpg [Broken]
When I first did the problem I didn't know if v(0) was the speed for the center of mass or tangential speed, but it seems like it is tangential speed. My question is, how exactly do we know it is the tangential speed and not the center of mass?
Homework Statement
[PLAIN]http://img577.imageshack.us/img577/1213/33472409.jpg [Broken]
[PLAIN]http://img695.imageshack.us/img695/2961/93055936.jpg [Broken]
SOLUTIONS
[PLAIN]http://img213.imageshack.us/img213/1912/64111316.jpg [Broken]
[PLAIN]http://img804.imageshack.us/img804/2032/78965826.jpg [Broken]
Here is my first question, why did they have two different 'h's? I don't understand why they substitute the H in part a into b, isn't that different? The H is without friction and the H in part b is the one with friction.
Now for part c
[PLAIN]http://img152.imageshack.us/img152/2179/28718730.jpg [Broken]
When I first did the problem I didn't know if v(0) was the speed for the center of mass or tangential speed, but it seems like it is tangential speed. My question is, how exactly do we know it is the tangential speed and not the center of mass?
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