1.

Which of the following are not correct?

Answer»

The escape velocity for the Moon is `6 KM s^(-1)`.
The escape velocity from the surface of Moon is `v`.
The ORBITAL velocity for a satellite to orbit very close to the surface of Moon is `v//2`
When an earth satellite is MOVED from one stable orbit to a further stable orbit, the gravitational potential energy increases.
The orbital velocity of a satellite revolving in as circular path close to the PLANET is independent of the density of the planet

Solution :a. For Moon escape velocity is `2.4kms^(-1)`.
d. `v_(0)=sqrt((2GM)/R)=sqr((2G)/Mxx4/3piR^(3)rho)`
or `v_(0)propsqrt(rho)`


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