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20000 किग्रा उत्थापन संहति के किसी रॉकेट में `5 ms^(-2)` के आरम्भिक त्वरण के साथ ऊपर की ओर स्फोट किया जाता हैं । स्फोट का आरम्भिक प्रणोद ( बल ) परिकलित कीजिए ।

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रॉकेट का प्रारम्भिक द्रव्यमान m = 20000 किग्रा
प्रारम्भिक त्वरण `a = 5.0 "मीटर /सेकण्ड"` ( ऊपर की ओर )
माना स्फोट का आरम्भिक प्रणोद T हैं ।
`therefore T - mg = ma`
अथवा T = mg + ma
= m (g + a)
`= 20000 xx ( 9.8 + 5.0)`
`= 2xx10^(4)xx14.8 N`
` = 29.6 xx 10^(4) N`
` = 2.96 xx 10^(5) N`
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