Recent content by lovin_physics05

im kinda slow, andim not that advanced, so I am tryin lil things. but i like this thing, ima be the only person in my class with a fully typed physics report. f_{x}=f\cos\theta

hello, has anyone taken the SAT subject test for physics before? i just wanted some insight into what kind of info they covered thank you for any kind of help u can give me take care

great thank u both so very very much u guys really helped me out a lot 11th grade physics student from new jersey by the way

ok yes i think i understand now so i wouldn't worry about Tx, just Ty? i say this because u are dividin by sin which is for vertical right?

did u mean Ty = T sinθ + mg ?

my angle to the horizontal is 25 degrees, that's one that i made up just to get a sense of how to solve the real problem. now i already had that degree, so how do i use itto solve tension again? sorry for all this

i may have said it incorrectly, but let me clarify if the radius was 3.0m and the distance from the object to the ceiling(where it is attached) is 2.0m then that forms a right triangle, where the length of out string is the hypotenuse so therefore c^2=a^2+b^2 c^2= 3.0m^2+2.0m^2 = 13m...

but i need to know the tension in the sring, notthe velocity and yes, the anglegiven is fromthe horizon wouldnt i find the tension of Tx and the tension of Ty and use vector addition to find T?

length of string is 3.6m

ok, when i used my wn numbers, i set the mass to 13kg which would equal awieght of 130N do u not need the velocityof the airplaeto determine thetension on the string since itisgoin around in a circle, i think i left that part out, that it is tied to the cieling by a string and it is...

ok, so i don't know tension in the string, but i haveto make it into Tx and Ty, therefore i usethe equation Tcos(degree)= tx and Tsin(degree)= Ty. so to find tension in tx, i would use Fnet=mv^2/r Tx=mv^2/r(cos(degree)) Ty=mv^2/r(sin(degree)) when i get those two i use vector addition...

well, ok that kindahelped. i do know howto do these centripetal force problems, usin Fnet=mv^2/r. where the tension is Fnet. but u can only do that if it is horizontal to the surface. my problem is thatit has a slope. so i set up an imaginary problem and pluged numbers in for that. butsay that i...

this is a harder problem then i thought well, do u knowthose model airplanes that are attached to somethinglike a cieling an the go around in a circle? i have to find the tension in the string umm the mass of the airplane is 13kg i dontknow the velocity the radius of the circle it is...

ive got a couple umm.. try http://www.physicsclassroom.com thats a good website u just have to search through it