For the moon to cease as the earth's satellite, its orbital velocity has to be increased by a factor of -
1. | 2 | 2. | \(\sqrt{2}\) |
3. | \(1/\sqrt{2}\) | 4. | 4 |
How many times is escape velocity, of orbital velocity for a satellite revolving near earth?
(a) times (b) 2 times
(c) 3 times (d) 4 times
The value of escape velocity on a certain planet is 2 km/s. Then the value of orbital speed
for a satellite orbiting close to its surface is:
1. 12km/s
2. 1km/s
3.
4.
If and represent the escape velocity and orbital velocity of a satellite corresponding
to a circular orbit of radius R, then
1.
2.
3.
4. and are not related
An earth satellite of mass m revolves in a circular orbit at a height h from the surface of
the earth. R is the radius of the earth and g is acceleration due to gravity at the surface
of the earth. The velocity of the satellite in the orbit is given by:
1.
2. gR
3.
4.
The ratio of the K.E. required to be given to the satellite to escape earth's gravitational
field to the K.E. required to be given so that the satellite moves in a circular orbit just
above earth atmosphere is:
1. One
2. Two
3. Half
4. Infinity
A small satellite is revolving near earth's surface. Its orbital velocity will be nearly
(1) 8 km/sec
(2) 11.2 km/sec
(3) 4 km/sec
(4) 6 km/sec
The orbital velocity of an artificial satellite in a circular orbit just above the earth's surface is v. For a satellite orbiting at an altitude of half of the earth's radius, the orbital velocity is
(1)
(2)
(3)
(4)
If the height of a satellite from the earth is negligible in comparison to the radius of the earth R, the orbital velocity of the satellite is
(1) gR
(2) gR/2
(3)
(4)
A satellite is moving around the earth with speed v in a circular orbit of radius r. If the orbit radius is decreased by 1%, its speed will
(1) Increase by 1%
(2) Increase by 0.5%
(3) Decrease by 1%
(4) Decrease by 0.5%