Space Help.. (1 Viewer)

[shantu1992]

Hey guys i really need some help on some questions if that's alright
they're preety basic
but i want to add more stuff to my answers so looking for abit more detail..

oaky well here we go..

1] The thrust force F (th) = v (ex) * change of m / change of t. Define the other three components of this formula, using them to show that the thrust force increases:

: the faster the exhaust gases are ejected relative to the rocket
: the more fuel that is burnt ( hence the graeter the mass of the exhaust gases)
: the greater the rate at which the fuel is burnt

2] Carefully explain the advantage of launching rockets from points on the equator to robit the Earth in a west-to-east direction. Show that the maximum velocity advantage that can be obtained is 465.1 ms-1

3] Without investigating maths or physics concepts involved, identify what the '' slingshot effect'' is, and why it allows spacecraft to reach jupiter and beyond against a powefull gravitation field of the sun.

thanks heapps guys

 

[vandretta]

1] Not too hard just find what happens when v(ex) tends to infinity, then what happens when change in m tends to infinity, then find what happens when change in t tends to 0.

2] also pretty simple, its in your book shantu1992 page 37.

3] just read the paragraph on page 55

I hope you got these done in time for the assessment hand-in today!