okay here's what i did, i got the circumference was 15.77 from going 2 *.8 * 3.14 = 5.024. then it takes one second to go around the circle so velocity is 5.024m/s
then use fc= m*v/r
i got fc = 49.73
then i did a=f/m
49.73N/.2kg
248.65 = a
F+T= ma
49.73 +T= .2kg * 248.65
so t = 6...
Homework Statement
The yo-yo has a mass of .2kg and is attached to a sting .8 m long. If the yo-yo makes a complete circular revolution each second, what tension must exist in the string? Can anyone please show me how to do this. thanks.
Homework Equations
F+t=ma
fc equations
a=f/m...
Homework Statement
The Earth's orbit around the sun is very nearly circular, with an average radius of 1.5x10^11 m. What is the average speed of the Earth in orbit around sun.Homework Equations
d/t= 2pi/tThe Attempt at a Solution
2pi*1.5x10^11/ 31556926
it comes out to be 29865.95
answer is...
Okay here's what i tried to do
500kg*9.8^2/6540000 = .0073
then i plugged it into
t=sqrt of 4pi^2*500kg*6540000m/.0073
This seems like it should be right but it just isn't! darnit. this is making me really angry I wonder if my teacher possibly posted the wrong answer?
can you plug the numbers in for me, I am still confused as heck. Remember the answer has to be 5132.8 seconds, which i just can't find how to get to. With those I got to 114.74, actually i got that multiple times, but it's not the right answer.
Homework Statement
Determine how long it would take for the satellite to make 1 complete revolution around earth
A 500 kg satellite is orbiting earth, radius of Earth is 6.38 x 10^3 km, and acceleration of gravity as the orbital altitude of 160km is the same as Earth basically 9.8.Homework...