Homework Statement
It is proposed to place a communications satellite in a circular orbit rounf the equator at a height og 3.59 x 10^7m above the Earth's surface. Find the period of revolution of the satellite in hours and comment on result.
Values given:
Radius of Earth: 6.37 x 10^6m...
Guys got this question and couldn't do it.
The Saturn V rockets which launched the Apollo space missions had the following specifications:(look at attached pic)
Caulculate i) the force(thrust) produced at lift
ii) the resultant force acting on the rocket at lift-off
Understand it. But can get how you got
"Then use x = ut + 0.5at^2 to find an expression for T, the time for the object to land (ie vertial displacement = 0).
I got T = usina/4.9"
could you please give me the steps to arrive to that usina/4.9
thx mate, I've spent at least 4 hours trying to work them out, but always got a lot of unknowns. Mainly the time keeps me away from solving it,
So i thought i would get out an equation for time, but then i got like a cos^-1 of 0 which is not possible.
i tried that mate still didn't manage to. i'll show you what i did.
Vertical:
s=ut+0.5at^2
s= usinΘ*t + 0.5(-10)(t^2)
s=usinΘt+5t^2
Horz:
s=ut
2s=ucosΘ*2t (2t because maximum height =t, and it takes double that to go down again, 2s because double the distance)
then
tried to...
Hi guys, got a question and been trying to solve it for 2 days.
the question is:
In the absence of air resistance with what angle to a horizontal ground must an object be thrown from ground level so that it ravels a distance before landing equal to twice the maximum height ?
I know...