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`        The escape velocity from earth is ve.A body is projected with a velocity of 2ve. With what constant vellocity will it move in the inter planetary space.OPTIONS;-1  :-  Ve2  :-  3^1/2Ve3  :-  2^1/2Ve4.;-   51/2Ve`
2 years ago

Arun
23346 Points
```							Dear Sam  Apply conservation of energy. Initially when body is on earth, Total energy = kinetic plus potential. And finally when it starts moving in interplanetary space, assuming potential energy at that point to be zero. it becomes kinetic energy only. So initially,  – GMm/R + 1/2m(2ve)2  And finally: 0 + 1/2m(v1)2  Equate the two and use ve = (2GM/R)1/2 You’ll get the answer answer is 31/2 Ve RegardsArun (askIITians forum expert)
```
2 years ago
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• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions