How Do You Solve Basic Physics Problems Using Textbook Formulas?

AI Thread Summary
The discussion revolves around solving basic physics problems using textbook formulas, specifically focusing on vertical motion. One participant successfully solved two problems using notes and textbook examples. They inquired about describing vertical motion in terms of velocity and time, while also discussing forces acting on hinges related to weight distribution. The conversation touches on the equation for vertical displacement, d = Vi x t + 1/2at^2, as a method to express motion over time. Overall, the thread emphasizes the application of fundamental physics concepts and formulas in problem-solving.
Lizz
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Nevermind... I was able to figure both problems out with some notes and problems from the textbook. :smile:
 
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1. Can you describe the vertical motion in terms of only the y component of velocity, vy, and time, t?

2. What've you tried?

--J
 
1. hm? I'm not sure what you mean.

2. Well, I figured that each hinge has to support 14g of weight, which is pretty obvious. Since they're both the same distance from the CG, then I guess I really only need to find the Forces for both one them. I was thinking that the force in the x direction would just be the hinge's distance from CG in the x direction (and same for the verticle force) multiplied by 14g, but I'm not sure.
 
If I gave you the initial vertical velocity, the acceleration due to gravity, and the initial height, could you tell me where I am as a function of time? Meaning, could you write an equation for y(t) using only these values that I gave you?

--J
 
And, naturally, I realize it's time for me to run off to class, so if anyone else wants to hop in here for me...

--J
 
Yeah, I think so... Isn't that just d = Vi x t + 1/2at^2?
 

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