A comet (Sphere of Ice)(Using weight of water
62.4 Lbs per cubic foot)
approaching the earth at a 60 degree angle... traveling at 30 miles
per second...and losing weight at the rate of 1000 lbs per second
per each 1 lb per square inch atmospheric pressure...Assume it starts
losing weight when the atmospheric pressure is 1 lb per square inch
at 56412 feet altitude.What size sphere will lose all it's weight by
the time it hits the earth?
Find the diameter of the sphere.
Volume of a sphere = (4/3)*Pi*R*R*R
where R = the Radius & Pi = 3.14159
At Sea Level Atm Pressure = 14.7 psi
At 18,000 ft = 7.35 psi
At 27,480 ft = 4.90 psi
At 56,412 ft = 1.00 psi