Question

A 200kg satellite is orbiting the Earth at an altitude of 250km. Its orbital speed is 27 800 kph. Find the centripetal acceleration of the satellite?

Answer 1

do you know how to do this one?

Answer 2

well i think the radius is 27800...

Answer 3

(200)(250)^2/27800 = 449.64ms^-2

Answer 4

does that look correct?

Answer 5

im sorry i cant wrap my head around it.

Answer 6

\[Fc= MV ^{2}\div R\]

Answer 7

wait wouldnt velocity be 27800?

Answer 8

yes it is.

Answer 9

so what is my radius then?

Answer 10

thats what i was trying to figure out.

Answer 11

V=2pi r / Time

Answer 12

ahhh

Answer 13

but i dont have r or t

Answer 14

time is 1 hr

Answer 15

because its kph?

Answer 16

yes.

Answer 17

hold on im getting my physics book

Answer 18

\[V=2\pi r/t\]

Answer 19

yes.

Answer 20

is t= 1 ??

Answer 21

or 60?

Answer 22

ok a=v^2/R

Answer 23

no that doesnt help..

Answer 24

can you please explain :)

Answer 25

im trying to find a way to find the radius

Answer 26

acceleration=velocity squared/ radius

Answer 27

so radius=velocity squared/accelertion

Answer 28

yah but how do you get the acceleration without the radius?

Answer 29

yea thats why i was like no that doesnt work

Answer 30

ok now bare with me.... isnt the radius of earth given somewhere...

Answer 31

then add 250 km

Answer 32

????

Answer 33

6 378.1km

Answer 34

yeaaaa

Answer 35

there you go!!

Answer 36

so its 6628.1km

Answer 37

v^2/r

Answer 38

27800^2km/hr / 6628.1k

Answer 39

116600.53

Answer 40

hold on sorry

Answer 41

((27800km/hr)^2/6 378.1km)mass

Answer 42

no you dont need mass for acceleration...

Answer 43

i hope i was able to help you some.

Answer 44

I have to find centripetal force now

Answer 45

multiply by mass

Answer 46

116,600.53*200?

Answer 47

the centripital acceleration * mass