Question

Help answering this question !! Image below

Answer 1

Alright, so there's a lot of confusing stuff going on here in this picture to throw you off. The only important stuff you need to know is the force of the second one, right? So that F1=200N is totally useless and you should forget it.

What you need to look at is the acceleration and direction of the second force. Since you know F=ma (I hope!) then you need to find the mass. Thankfully it's given at the beginning of the question in kilograms.

They want it in unit vector notation, so just split it up into x and y components with sine and cosine, and don't forget that even though sin(30)=1/2 that really you're looking at a coordinate frame that's weird so add a negative sign. Alternatively you can add the extra degrees starting from where you might normally, but that can be confusing making it sin(240) when you can just look and use common sense and say, "gee, this is 1/2, but it's going down so it must be a negative sign here."

Hope that helps, I can clarify anything if you'd like!

Answer 2

Ill have to go for now ..come back and check ... Thank u ... :)

Answer 3

F2 +F1 = ma(-cos30j -sin 30i)
F2 +200i =-24(cos 30 +sin 30)
solve for F2