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NEET 2006 (AIPMT) · Motion Under Gravity

Motion Under Gravity question from NEET 2006 (AIPMT)

Q52NEET 2006 · AIPMTEasy

Motion Under Gravity

Two bodies A (of mass 1 kg) and B (of mass 3 kg) are dropped from heights of 16 m and 25 m, respectively. The ratio of the time taken by them to reach the ground is

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Answer: (a)

Time of fall $t = \sqrt{2h/g}$ does not depend on mass, so $t \propto \sqrt{h}$ .
$\frac{t_A}{t_B} = \sqrt{\frac{16}{25}} = \frac{4}{5}$
So the answer is (a) 4/5.

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