How does the force get cancel out?

Thread starter cmkc109
Start date Apr 17, 2013
Tags

Force

AI Thread Summary

The discussion revolves around understanding how forces cancel out in a physics problem. The user questions why a specific force, F1, is not included in the calculations while a similar force, F4, is. There is mention of horizontal and vertical vectors potentially canceling each other, leading to confusion about the calculations involved. The user ultimately indicates they have solved the problem, suggesting they gained clarity on the force cancellation concept. The conversation highlights the importance of vector components in analyzing force interactions.

Apr 17, 2013

cmkc109

Homework Statement

How does the force get cancel out?

Homework Equations

The Attempt at a Solution

Please see the picture.
I don't understand why is F1 not included in the system ?
F1 just looks the same as F4, but F4 is included in the calculation.
Someone told me the horizontal vector and vertical vector somehow cancel out each other but i don't quite get it..

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Apr 17, 2013

rock.freak667

Homework Helper

What exactly does the calculation involve?

Apr 17, 2013

cmkc109

solved the problem!

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