A body is projected vertically upwards from the surface of earth with a velocity sufficient enough to carry it to infinity. The time taken by it to earth reach height h is________
A body is projected vertically upwards from the surface of earth with a velocity sufficient enough to carry it to infinity. The time taken by it to earth reach height h is________
Option 1 -
Option 2 -
Option 3 -
Option 4 -
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1 Answer
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Correct Option - 2
Detailed Solution:Using conservation of energy :
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->R3 = (R + x)2 (R – x)
->R3 = (R2– x2) (R + x)
->x2 + Rx – R2 = 0
Stress
R is not correct.
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