AP EAMCET · PHYSICS · Gravitation
A projectile is thrown straight upward from the earth's surface with an initial speed , where is a constant and is the escape speed. The projectile travels upto a height from earth's surface, before it comes to rest. The value of the constant is,
(Radius of the earth )
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
Escape velocity is given by: vE=2GMR At Earth's surface: Kinetic energy of the particle KE1=12mv2=12mα2vE2=12mα2×2GMR=GMmα2R Potential energy of the particle: PE1=-GMmR At certain height the particle stops for a moment: KE2=0 PE2=-GMmR+h Applying conservation…
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