Physics, Torque (8 of 13) Static Equilibrium, Hanging Sign No. 2

Shows how to use static equilibrium to determine the tension in two cables supporting a hanging sign. The sum of the forces in the x-direction and the sum of the y-direction are set equal to zero.
Torque is a rotating force. It is a measure of how much force is acting on an object that causes the object to rotate. The object will rotate about an axis, which is called the pivot point. It is labeled with the letter P or O. The distance from the pivot point to the point where the force acts is called the moment arm or the lever arm. This distance is labeled with the letter r. This distance r is also a vector, and points from the axis of rotation to the point where the force acts. The force is labeled with the letter F.
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[@stepbystepscience]

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[@frankdimeglio8216]

@@stepbystepscience The term universe is very and increasingly overused. Everything has to be clearly defined and understood. Outer “space” is not to be referred to as SPACE. Gravity, as it has been written, is an interaction. It is fundamental. The term inertia is now redefined as “inertia/inertial resistance”. BALANCED inertia/INERTIAL RESISTANCE is fundamental. Einstein never nearly understood physics/physical experience. Here are the facts.
PRECISELY WHY AND HOW THE BALANCED, TOP DOWN, COMMON SENSE, SIMPLE, EXTENSIVE, AND CLEAR MATHEMATICAL UNIFICATION OF PHYSICS/PHYSICAL EXPERIENCE IS PROVEN BY (AND CONSISTENT WITH) F=MA AND E=MC2:
The following also CLEARLY explains why the rotation of WHAT IS THE MOON matches it's revolution.
c squared represents a dimension of SPACE on balance WITH the fact that the stars AND PLANETS are POINTS in the night sky. Indeed, the sky is blue; AND what is THE EARTH/ground is ALSO BLUE (on balance) !! Consider what is the speed of light (c) ON BALANCE. A PHOTON may be placed at the center of what is THE SUN (as A POINT, of course), AS the reduction of SPACE is offset by (or BALANCED with) the speed of light (c) (ON BALANCE); AS E=mc2 IS F=ma; AS ELECTROMAGNETISM/energy is (CLEARLY AND necessarily) proven to be gravity (ON/IN BALANCE).
General Relativity is directly taken from Special Relativity. E=mc2 is taken directly from F=ma. CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky. Consider TIME (AND time dilation) ON BALANCE. I have exposed Einstein. Beautiful.
Note: Consider what is THE EYE ON BALANCE. Think carefully about the black “space” AS WELL. Great. It ALL CLEARLY makes perfect sense, as BALANCE AND completeness go hand in hand. THE EYE represents a two dimensional surface OR SPACE (ON BALANCE) that is consistent with F=ma AND E=mc2. This NECESSARILY represents, INVOLVES, AND DESCRIBES what is possible/potential AND actual IN/ON BALANCE. Consider what is necessarily, CLEARLY, logically, and by definition the MIDDLE DISTANCE in/of SPACE ON/IN BALANCE. GREAT !!! Think about what is true/real QUANTUM GRAVITY !!! Great.
Consider what is THE SUN. The sky is blue, and THE EARTH/ground is ALSO BLUE. Again, the stars AND PLANETS are POINTS in the night sky. GREAT. E=mc2 IS F=ma. This explains the fourth dimension AND the term c4 from Einstein's field equations. BALANCED inertia/INERTIAL RESISTANCE is fundamental.
The gravitational “field” is E=mc2 as F=ma. Consider what is THE EARTH/ground ON BALANCE. The stars AND PLANETS are POINTS in the night sky. Consider TIME (AND time dilation) on balance. Consider what is THE SUN ON BALANCE. I have explained why the rotation of WHAT IS THE MOON matches it's revolution. The sky is blue, and THE EARTH/ground is ALSO BLUE. Carefully consider what is THE EYE ON BALANCE. Consider what is the balanced MIDDLE DISTANCE in/of SPACE. E=mc2 IS F=ma ON BALANCE. That's the answer. ELECTROMAGNETISM/energy is CLEARLY and necessarily proven to be gravity (ON/IN BALANCE).
Get a good LOOK at what are the fully illuminated (AND setting) Moon AND the orange AND setting Sun. Consider what is the blue sky ON BALANCE. Lava is orange, and it is even blood red. THINK !!! SO, ON BALANCE, consider what are the tides !!! Excellent. E=mc2 IS F=ma. Accordingly, it ALL CLEARLY makes perfect sense; as BALANCE AND completeness go hand in hand. Again, the stars AND PLANETS are POINTS in the night sky. Consider what is THE SUN ON BALANCE. Think about what is the BALANCED MIDDLE DISTANCE in/of SPACE, AND consider what is the speed of light (c) ON BALANCE !!! GREAT !!! Consider TIME (AND time dilation) ON BALANCE !!! Wonderful. The sky is blue, AND THE EARTH is ALSO BLUE. The tides are CLEARLY and necessarily proven to be ELECTROMAGNETIC/gravitational ON/IN BALANCE, as E=mc2 IS F=ma (ON/IN BALANCE).
By Frank DiMeglio

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[@stepbystepscience]

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Physics final tomorrow and had no idea what static equilibrium was until 30 minutes ago. 3 videos later and I feel like an expert.

[@stepbystepscience]

+Christine Copeman Excellent, thanks for watching and commenting.
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Step by Step science

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Can you show what happen to the equations when the angle 63 and angle 38 are reduced to 0?

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what happens if like the ropes are in a corner and one is fixed on the wall past 180 degrees? How do you divide this in x and y components

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+Nicol Morales You are very welcome.
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[@noreaction1]

What if it swings in the Z axis, then what are the maximum and minimum tensions in each cable?

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Very, VERY helpful video. I can't thank you enough.

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Victor R and i oop-

[@omarabu-khalaf6043]

Thank you Teacher, I would like to ask about a part of a question I saw in an IG textbook, the question starts as "A smooth bead is threaded on a light inextensible string, the ends of the string are attached to the ceilling, the bead is acted on by a horizontal force F and the bead is in equilibrium..... ", the point is that the answer assumes that the tension on both sides of the string are equal, why is this true?
Thanks

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In this question the angles are known..suppose the angles were not given then how to find the angles?( Mass is given)

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[@timmendes8064]

Why there is no force Normal in the y-direction?

[@happyplace7249]

What is the tension of T3

[@jooryjordan4139]

Thank u very much

[@stepbystepscience]

You are very welcome

[@johnryanalegre8118]

thank you sir for your wonderful explanation. but can i ask something? how can we determine if the system is whether a static equilibrium or not?

[@stepbystepscience]

If all of the forces in the x-direction equal zero and all of the force in the y-direction equal zero then the system is in equilibrium.

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Can someone explain why it is
T2X - T1X
instead of T2X+T1X

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[@stepbystepscience]

A good teacher helps, and if the topics are broken down into small steps all the better. Thanks for the very nice comment.

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[@stepbystepscience]

+flamesofresolution That is very nice of you to say.
You can see a listing of all my videos at my website, www.stepbystepscience.com

[@amir98ist]

i was asked the tension of the middle string, how to that??

[@stepbystepscience]

Just the weight of the sign.
You can see a listing of all my videos at my website, www.stepbystepscience.com