Where Is the Center of Mass in a Triangle with Unequal Masses?

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Homework Help Overview

The discussion revolves around determining the center of mass for a triangle with three point masses located at its vertices, where the masses are unequal. The problem involves calculating the coordinates of the center of mass before any rotation occurs.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants express uncertainty about how to begin solving the problem and inquire about the concept of center of mass. One participant suggests considering a simplified scenario where all masses are equal to facilitate understanding.

Discussion Status

The discussion is ongoing, with participants seeking clarification on foundational concepts related to center of mass. Some guidance has been offered regarding the approach to the problem, but there is no explicit consensus on how to proceed.

Contextual Notes

Participants are reminded of forum rules regarding attempts before seeking help, and there is an emphasis on understanding the problem context before applying equations.

TutaTeacherAllan
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OP warned about not providing an attempt at a solution
Homework Statement
Figure 4 shows three point masses glued to the vertices of a massless triangle of side L=2.0 m. Two of the massess are m=0.75kg and the other mass is twice that value, as shown in the figure. The device is allowed to rotate about point A in a verticle plane about the centre of the larger mass, 2m. Give the x and y coordinates of the centre of mass of the device in the coordinate system
Relevant Equations
Figure 4 shows three point masses glued to the vertices of a massless triangle of side L=2.0 m. Two of the massess are m=0.75kg and the other mass is twice that value, as shown in the figure. The device is allowed to rotate about point A in a verticle plane about the centre of the larger mass, 2m. Give the x and y coordinates of the centre of mass of the device in the coordinate system
Figure 4 shows three point masses glued to the vertices of a massless triangle of side L=2.0 m. Two of the massess are m=0.75kg and the other mass is twice that value, as shown in the figure. The device is allowed to rotate about point A in a vertical plane about the centre of the larger mass, 2m. Give the x and y coordinates of the centre of mass of the device in the coordinate system
 

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"Relevant equations" is for standard equations you think may be relevant to the problem, not a rehash of the question.

Please post an attempt as required by forum rules.
 
I have no Idea how to start please
 
TutaTeacherAllan said:
I have no Idea how to start please
What have you been taught about finding a centre of mass?
 
TutaTeacherAllan said:
I have no Idea how to start please
Welcome, Allan! :smile:
Not using any equation yet:
If the values of the three masses were all the same, let's say 1 kg each, where the center of mass would be located at within the triangle?
Question a) is asking you about the x-y location of the center of mass before the triangle is rotated 45 degrees.

Please, see:
http://hyperphysics.phy-astr.gsu.edu/hbase/cm.html

Please, read about the requirements of the forum about posting questions.
We will be happy to help you if you help us understanding your situation first.
:cool:
 
Last edited:

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