hey guys.. i was wondering if i could get any help wit the following question coz i have no idea how to do them. by the way these questions are part of something my physics teacher gave me and the rest of the class to do as an assignment
2. Calculate the weight of a 65kg person at:
i) the opera house
ii) floating in space 300km above the surface
iii) in a geostationary space station 36000 km above the Earth
iv) the work done to get the person to the geostationary satellite
5. A three-stage rocket launches a satellite into a low earth orbit (LEO), at a height of 320km. The weight of the satellite at launch is 12kN. This gradually decreases to 10kN at 320km.
a) Account for the change in weight of the satellite
b) how much did the launch vehicle do in lifting the satellite to its orbit?
c)calculate the satellites orbital speed
d) due to fricitional forces with the very tenuous atmosphere, the satellite gradually drops to a lower orbit of 300km. How much gravitational potential energy does it lose?
e) what qualitative effect would this reduction in altitude have on the orbital speed of the satellite?
PLEASE HELP!!!!! THIS IS DUE TOMORROW!!!!!!!!!!
2. Calculate the weight of a 65kg person at:
i) the opera house
ii) floating in space 300km above the surface
iii) in a geostationary space station 36000 km above the Earth
iv) the work done to get the person to the geostationary satellite
5. A three-stage rocket launches a satellite into a low earth orbit (LEO), at a height of 320km. The weight of the satellite at launch is 12kN. This gradually decreases to 10kN at 320km.
a) Account for the change in weight of the satellite
b) how much did the launch vehicle do in lifting the satellite to its orbit?
c)calculate the satellites orbital speed
d) due to fricitional forces with the very tenuous atmosphere, the satellite gradually drops to a lower orbit of 300km. How much gravitational potential energy does it lose?
e) what qualitative effect would this reduction in altitude have on the orbital speed of the satellite?
PLEASE HELP!!!!! THIS IS DUE TOMORROW!!!!!!!!!!