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A body is moving in a straight line under the influence of a surce of constant power which supplies its energy continuously. Which of the above graphs shown between displacement 's' and time 'shows the true relation for its motion ? |
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Answer»
impliesFS=Pt or `FS prop t` …(i) Now `1/2at^2=S` `IMPLIES a prop (S)/(t^2)` Since F=ma `implies F prop implies F prop (S)/(t^2)` `:.` (i) GIVES `(S)/(t^2).S prop t` `implies S^2 prop t^3implies S prop t^(3/2)` THUS DISPLACEMENT `prop (t)^(3/4)` |
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