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Question

Two bodies of different masses ma and mb are dropped from two different heights, a and b respectively. The ratio of times taken by the two to drop through these distances is:
  1. a:b
  2. a2:b2
  3. ma:mb
  4. a:b


Solution

The correct option is D a:b
As we know that, time taken by the body after dropping to reach the certain depth is given as
t=2hg, where, h is the height from where body is dropped.
For height a:
t1=2ag
And for height b:
t2=2bg
Thus, t1t2=ab
 

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