well we were learning it with the paralellogram law of addition...none of the fsintheta stuff.........don't get why and how your using the angles in the fsintheta+fsinalpha=0 equations.....
-t1cosA+t2cosB=0
You don't know that it's equal zero when your doing the question though.....so why did you assume its zero? ......:D I'm sorry but I'm having a hard time comprehending this shizzle.......Um like I have question all over the place, why - in front? Why are you adding stuff lol...
lol i know how to draw free-body diagrams but then I don't know what you want me to add up......how you get fsin whatever......whats ur adding there not sure.....btw this is grade 12
ok first of all lol i don't know what "point of application" is exactly. And I don't know how to draw the diagram your talking about. I don't know what i'm adding I'm confused lol......In my answer I had a right triangle with the force 375 going in the same way as the tension force.
yes you have but if you actualy do the question and try finding the angles you find that one is 90 degrees :D. So now you have a different diagram right?
I've had a bit of a problem with the following question. I have the answer I did it properly except for one part i can't comprehend.
A steel wire 40m long is suspended between two fixed points 20m apart. A force of 375N pulls the wire down at a point 15m from one end of the wire. State the...
Sorry but I'm still not clear on that. I know that to find a value thats divisible in an equation you try f(x) and if that equals 0 in the equation its divisible. In my case its x^3+5x^2+6x+11 so the only things i try are the last number 11. (+-1, +-11) and that doesn't equal 0..........Explain...
Find the value of m so that when x^3+5x^2+6x+11 is divided by (x+m) the remainder is 3.
Im having so much diffculty with this and it's so frustrating can anyoen help
Thomas
Calculating charge and force of electric repulsion
Calculate the force of electric repulsion between two small spheres placed 1m apart if each has a deficit of 1x10^8 electrons.
I tried this and only got r=1m and N=1x10^8
I don't know the equation needed for this please help..
Thomas
or maybe ur right .....thats the plane......but not the answer
I'm not sure how to find the normal.....(1,0,0)cross what? to get a normal.....then after that put the (x,y,z) values in the equation Ax+By+Cz+D=0
Then find D by inserting the point (4,-2,1) and you've got the equation?
Is...
hallsofivy.....that is not the answer.......I think you are wrong.......can you please make it a bit more clear on the steps made to get the answer.
for my first question ok sorry maybe I worded it wrong....how do i find a normal plane of a direction vector in 3 space?
Question #1. How do you find a normal of a direction vector in 3 space?
Question #2.:
What is the scalar equation of the plane that contains the x-axis and the point (4,-2,1)?
damnit all of you gave me different ways but now I'm confused ....can someone really go easy step by step
I tried something else. DOn't know if its right but how do I prove:
log_9a=2log_3a