With what velocity should a particle be projected so that its height becomes equal to radius of earth?A. `((GM)/R)^(1//2)`B. `((8GM)/R)^(1//2)`C. `((2GM)/R)^(1//2)`D. `((4GM)/R)^(1//2)`

With what velocity should a particle be projected so that its height b

1.	With what velocity should a particle be projected so that its height becomes equal to radius of earth?A. `((GM)/R)^(1//2)`B. `((8GM)/R)^(1//2)`C. `((2GM)/R)^(1//2)`D. `((4GM)/R)^(1//2)`
Answer» Correct Answer - A Apply energy conservation `"-GMm"/R+1/2mv^2` `=-"GMm"/"2R" rArr v=sqrt((GM)/R)`

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With what velocity should a particle be projected so that its height becomes equal to radius of earth?A. `((GM)/R)^(1//2)`B. `((8GM)/R)^(1//2)`C. `((2GM)/R)^(1//2)`D. `((4GM)/R)^(1//2)`

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