Static Equilibrium Door question: Calculate Horizontal Forces

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Homework Help Overview

The problem involves a uniform rectangular door with specified dimensions and weight, supported by two hinges at different heights. The objective is to calculate the horizontal forces acting on each hinge while considering the principles of static equilibrium.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the concept of moments and torques related to the hinges, questioning how to derive horizontal forces from the weight and moments acting on the door. Some suggest using one hinge as a pivot point for analysis.

Discussion Status

Participants are actively exploring different methods to approach the problem, including considerations of torque and force balance. There is a recognition of the need to account for both horizontal and vertical forces, but no consensus has been reached on the specific calculations or methods to apply.

Contextual Notes

Some participants express uncertainty about the role of angular acceleration in static equilibrium problems, while others note that the problem may not require such considerations. The discussion reflects a mix of theoretical understanding and practical application challenges.

  • #31
pgardn said:
You are a good student who actually does the work. Its no problem helping people like this. I took a look at the problem that I helped you with before and it was actually more difficult.

My bad... props to you for working hard.

Thanks, I'm taking it over the summer so its taking me longer to absorb some things--that's why I come here!
 
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  • #32
It's simple. Take moments about bottom hinge, using distances perpendicular to the forces. Moment of inertia not required for this problem in simple statics.
 

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