Question

17. A satellite is orbiting the earth close to its surface. A
particle is to be projected from the satellite to just escape
from the earth. The escape speed from the earth is ve.
Its speed with respect to the satellite
(a) will be less than ve
(b) will be more than ve
(c) will be equal to ve
(d) will depend on direction of projection.​

Answer 1

Answer:

The speed of the object thrown from the satellite will be more than the speed of satellite. This is because the satellite is revolving with the orbital speed, which is equal to underroot gR. However, the speed of object will be the escape speed which is underroot 2gR. Hence, speed of object will be more than the speed of satellite.

Now, since the object is already moving with orbital speed, then to attain escape velocity, the object needs to attain lesser velocity than the escape velocity.

correct option (a)

Answer 2

Answer:

Explanation:

The speed of particle to be projected from the satellite to just escape from the earth with respect to the satellite will depend on direction of projection.

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