KVPY SA Exam 2015 Question Paper

Question : 30 of 80

Marks: +1, -0

The international space station is maintained in a nearly circular orbit with a mean altitude of 330 km and a maximum of 410 km. An astronaut is floating in the space station’s cabin. The acceleration of astronaut as measured from the earth is

zero.
nearly zero and directed towards the earth.
nearly g and directed along the line of travel of the station.
nearly g and directed towards the earth.

Validate

Solution:

g ={GM}/(R+h)^2

h << R

g ≈{GM}/ R ^2

towards the earth

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