Recent content by 1517279

k it should be f=1/4pieEo *q/r^2 then right?

length of the string is not given

Homework Statement An electric field E=141000.0i N/C causes the 4.70 g ball in the picture to hang at a α=22.9° angle. What is the charge on the ball? Homework Equations E=(1/4pieE)*(q/r^2) The Attempt at a Solution I tried solving this question first by drawing a force diagram on...

i still don't get it ... damn.. =(... im really a physics noob *shouldn;t it be Tsin(theta) =mg and TCos(theta) =mv^2/R? *How would u get the acceleration even u have these 2 equations? since you would need the acceleration to figure out the theta, then to figure out the velocity ...

PS: and the angular velocity, i don't know where to start with all the given variables, I'm truly lost..

Hi first of all thankyou so much for replying this post, since I'm actually not very bright in physics, would you mind further clarifying your method of approach? (ie how would you get acceleration in the first place without using forces?) thankyou

Homework Statement You've taken your neighbor's young child to the carnival to ride the rides. She wants to ride The Rocket. Eight rocket shaped cars hang by chains from the outside edge of a large steel disk. A vertical axle through the center of the ride turns the disk, causing the cars to...