How Do You Solve Basic Physics Problems Using Textbook Formulas?

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Homework Help Overview

The discussion revolves around solving basic physics problems using textbook formulas, particularly focusing on vertical motion and forces acting on hinges. Participants explore the application of kinematic equations and the relationships between various physical quantities.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss the vertical motion in terms of velocity and time, questioning how to express position as a function of time. There are attempts to relate forces acting on hinges to their distance from the center of gravity, and participants express uncertainty about their reasoning.

Discussion Status

The discussion is active, with participants sharing their thoughts and questions. Some have provided insights into the relationships between forces and motion, while others are seeking clarification on specific concepts. There is no explicit consensus, but various lines of reasoning are being explored.

Contextual Notes

Participants are working within the constraints of using provided values such as initial velocity, acceleration due to gravity, and initial height. There is a mention of homework rules that may limit the type of assistance sought.

Lizz
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Nevermind... I was able to figure both problems out with some notes and problems from the textbook. :smile:
 
Last edited:
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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 vertical 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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