00:01
So, we have the perigee height hp as 1000 km and the height of the apogee ha is 4000 km and the mean radius of earth is given as 6378 .14 km and we have to find out the time.
00:24
So, we can calculate the distance for the apogee.
00:29
First of all, let us draw the diagram.
00:31
So, this is the diagram.
00:33
Here a is the apogee and p is the perigee point and we need to calculate ra which is the distance of the apogee point from the center of the earth.
00:44
So, ra will be equals to ha plus capital r.
00:49
So, when we substitute ra will be equals to 10378 .14 km.
00:58
So, let us calculate rp also.
01:02
So, rp will be equals to hp plus capital r and this will give us the value as 7378 .14 km.
01:13
Now, with the help of this we can calculate the semi -major axis which is so, the semi -major axis a will be equals to the average of this ra plus rp over.
01:36
So, from this we can calculate...