GravitationHard
Question
The escape velocity for a planet is ve. A particle starts from rest at a large distance from the planed, reaches the planet only under gravitational attraction, and passes through a smooth tunnel through its centre. Its speed at the centre of the planet will be -
Options
A.
B.
C.ve
D.Zero
Solution
From mechanical energy conservation 0 + 0 = 
mv2 - 
⇒ v = 
ve
mv2 - ⇒ v = ve Create a free account to view solution
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