Statics Example: 2D Moments

[jodifrye]

Thank you! This makes the components make more sense when talking about moments.

[emmastephens]

Something that I have come to think of when looking for the direction of moment in each component is thinking of each force as it moves along its own line of action, and then considering how I would have to 'steer' the arrow head in order to reach the point that I are trying to find the moment around. This has worked well for me in 2D problems, I am not sure how it would hold up in 3D problems.

[cappecat_]

lol i was looking for 2D from the Gorillaz I clicked because I thought 2D was teaching Statics XD

[RozArialind]

A number of questions, if I may.
1) Why didn't you break the first two into the vertial and horizontal?
2) Why is it -5(500 4/5)?

[KingCobra]

thanks for your effort fully understand the Moment

[shahidAhmad]

A wonderful video, sir if you please upload some videos of dynamics, i will be very thankful

[karimkhan]

sir - you are the best on this topic

[emilianojimenez]

how did you get cosine and sine for the first 2 forces?

[mariedi]

how does a force going to the right produce a CCW rotation about a?

[chaz]

So you use the X plane distance in the moment multiplication for the y force and the Y plane distance from the point for the multiplication of the force for the X direction. It's confusing.

[karimkhan]

thank u sir for excelent presentation

[kaeli]

in moment_A1 it should be a 250 sin 30
because its respect to y axis

[carlosombao]

Don't know if you're still active but, why is the (500 x 3/4) force taken as 4 meteres. I thought a moment was M=Fd(perpedicular) where d is distance from pivot point A?

[bolisa.k]

I thought counter clockwise is the same as anticlockwise

[jcflores]

why is the horizontal 4/5 shouldn't it be 3/5? and the vertical 4/5

[UppatownNyc]

Why are you using cosine for the first one?

[craig]

Should the y component of F1 be 250sin(30) ?

[dextergeeunabia]

I am really confused. Who were telling you the truth? On the other video I watched, he said that the counter clockwise was the negative and the clockwise was the positive.

[mauriciorv]

why is Fx component 4 meters? i don´t quite get that

[johnmifsud]

cos 30 is cos 30 radians - silly not writing the degree symbol. Feeble students make this mistake.