InterviewSolution
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InterviewSolution
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Water drops fall at regular intervals from a tap 5 m above the ground. The third drop is leaving the tap, the instant the first drop touches the ground. How far above the ground is the second drop at that instant. `(g = 10 ms^-2)`A. (a) ` 1 . 25 m`B. (b) ` 2. 50 m`C. (c ) ` 3. 75 m`D. (d) ` 6 sec` |
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Answer» Correct Answer - C Time taken by one drop to fall through ` 5 m` is ` sqrt 9 2S)/g ` = sqrt (2 xx 50/(10) = 1 sec` :. Time interval for successive two drops is 91//20 sceond. The distance travelled by falling drop ` in (1//2) second is , ` S = 1/2 xx 10 x 91/2)^2 = 1.25 m` :. Height of second drop from ground ` -= 5 - 1.25 m`. |
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