Circular Motion

really stuck on these questions have no understand on how to even start them. Q5 , Q7 . thanks for the help in advance.

draw a diagram

write down what you know from the question

$F = m\omega^{2} r$

?

i managed 5,6 but i cannot do 7 at all

well, the satellite's undergoing circular motion

what's the time period of one revolution

once you know that, what's the angular velocity?

finish by $F = m\omega^{2}r$

er 2pi/24*60*60 ? dont quite understand about the values i need mostly.

F is the gravitational force the satellite feels, m is the mass of the satellite, omega is the angular velocity and r is the radius (remember to include the distance between the satellite all the way to the centre of the planet)

this question makes no sense i mean how do you class the mass and the angular velocity ?

well based on what's given in the question

the mass of the satellite is 1 tonne

the angular velocity is $\dfrac{2 \pi}{24*60^{2}}$

the book says 38.1N?