Tuesday

January 27, 2015

January 27, 2015

Posted by **Anonymous** on Monday, October 31, 2011 at 11:10pm.

(a) Find the altitude of the satellite.

- physics -
**drwls**, Monday, October 31, 2011 at 11:50pmEquate the gravitational force,

GmM/R^2, to the centripetal force, m V^2/R

M is the Earth's mass and G is the universal constant, which you need to look up. Satellite mass m cancels out.

Substitute 2 pi R/(139*60) for the velocity, V (in m/s).

Solve for the remaining variable R.

The satellite altitude is H = R - Rearth

- physics -
**tchrwill**, Tuesday, November 1, 2011 at 10:46amThe orbital period of a satellite derives from

T = 2(Pi)sqrt(r^3/µ) where T = the period in seconds

Pi = 3.14

r = the orbital radius in feet and

µ = the earth's gravitational constant = 1.407974x10^16 ft^3/sec^2.

139(60)= 2(3.14)sqrt(r^3/1.407974x10^16)

Solving for r = 5523.6 miles making the altitude 1560.6 miles = 2511km.

**Answer this Question**

**Related Questions**

physics - A satellite circles the earth in an orbit whose radius is 2.01 times ...

Phyiscs - A satellite circles the earth in an orbit whose radius is 2.07 times ...

physics - 4(a) What is the magnitude of the gravitational force of the Earth on ...

physics - A satellite of mass 225 kg is launched from a site on Earth's equator...

Physics - A satellite used in a cellular telephone network has a mass of 2160 kg...

force of gravity - A satellite orbits around the earth. The mass of the ...

physics - An artificial satellite placed into earth's orbit has a mass of 1250kg...

Physics - A communications satellite with a mass of 450 kg is in a circular ...

Physics - A 50-kg satellite circles the Earth in an orbit with a period of 120 ...

Physics - A spy satellite is in circular orbit around Earth. It makes one ...