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
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 allready had that degree, so how do i use itto solve tension again?
sorry for all this
i may hav 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
c...
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?
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 centripital 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...