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Grade: 11
        
A particle is thrown vertically upwards from the surface of the earth and it reaches to a maximum height equal to the radius of earth.The ratio of the velocity of projection to the escape velocity on the surface of earth is
one month ago

Answers : (1)

Mohammed Kasib Siddiqui
120 Points
							
W= mgh/(1+h/R) which is change in potential also .
Apply law of conservation of mass.
KE=PE
1/2mv^2= mgh/(1+h/R)
where h=R
On solving we get v= root (gR)
Escape velocity = root (2gR)
Now divide these velocities to get yoir answer
 
Plz approve.
one month ago
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