In this question, a statement of assertion 
is followed by a statement of reason (R). Mark the correct choice as:
Assertion: Viscous force increase the velocity of satellite.
Reason: Orbital velocity of a satellite is directly proportional to square root of radius of earth.
Text Solution
Verified by ExpertsB
When a satellite of mass m revolves in a circular orbit of radius 
around the earth of mass 
the gravitational
attraction of earth provides the required centripetal force i.e. 
or, 
or 
a constant
or, 
a constant
Where 
, angular momentum of a satellite. According to law of conversation of momentum if no external torque acts on the satellite, then its angular momentum L is conserved. Since the air friction will provide a retarding torque to satellite, therefore, there will be decrease in angular momentum of the satellite in air. As a result of it, the velocity of satellite increases according to relation.
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems