# Physics

Two satellites A and B of the same mass
are orbiting Earth in concentric orbits. The
distance of satellite B from Earth’s center is
twice that of satellite A.
What is the ratio of the tangential speed of
B to that of A?

1. 👍
2. 👎
3. 👁
1. Vc = sqrt(µ/r)

V(A)^2 = µ/r(A)

V(B)^2 = µ/r(B) = µ/2r(A)

V(B)^2/(2/V(A)^2 = [µ/2r(A)]/[µr(A)]

.................= 2

V(B)/V(A) = sqrt2

1. 👍
2. 👎

## Similar Questions

1. ### physics

Two artificial satellites, 1 and 2, orbit the Earth in circular orbits having radii R1 and R2. If R2=2R1, the accelerations a2 and a1 of the satellites are related how?

2. ### Physics help quick!

22. What does it mean for a force to act in accordance with an inverse square law? The square of the force is inversely proportional to the distance. The force decreases if the distance increases. The force is directly

8. Which of these correctly compares the masses of different objects in the universe? A moon has less mass than a star and more mass than the planet it orbits. B A planet has less mass than a galaxy and more mass than the star it

4. ### Physics

You are explaining why astronauts feel weightless while orbiting in the space shuttle. Your friends respond that they thought gravity was just a lot weaker up there. Convince them and yourself that it isn't so by calculating the

1. ### Physics

A satellite with an orbital period of exactly 24.0 h is always positioned over the same spot on Earth. This is known as a geosynchronous orbit. Television, communication, and weather satellites use geosynchronous orbits. At what

2. ### Science

Imagine Two Artificial Satellites Orbiting Earth At The Same Distance. One Satellite Has A Greater Mass Than The Other One? Which Of The Following Would Be True About Their Motion? A.The satellite with the greater mass is being

3. ### Physics

Two satellites, A and B, are in different circular orbits about the earth. The orbital speed of satellite A is eighty-two times that of satellite B. Find the ratio (TA/TB) of the periods of the satellites.

4. ### physics

If the average speed of an orbiting space shuttle is 19600 mi/h, determine the time required for it to circle the Earth. Make sure you consider the fact that the shuttle is orbiting about 200 mi above the Earth's surface, and

1. ### Physics

GPS can be used to determine positions with great accuracy. The system works by determining the distance between the observer and each of the several satellites orbiting Earth. If one of the satellites is at a distance of 20,000

2. ### Physic

What is the period of revolution of a satellite with mass m that orbits the earth in a circular path of radius 7820 km (about 1450 km above the surface of the earth)?

3. ### Physics

A 620 kg satellite orbits the earth where the acceleration due to gravity is 0.233 m/s^2. What is the kinetic energy of this orbiting satellite?

4. ### Physics

Sputnik, the first artificial satellite to orbit the Earth, had a mass of 83.6kg and travelled at 7574 m/s. The radius of the earth is 6371 km and its mass is 5.972 x 10^24 kg. What gravitational force did Sputnik apply to the