A bullet ofmass m is fired with a velocity `10m//s` at angle `theta` with horizontal. At the hightest point of its trajectory, it collsides head-on with a bob of mass `3m` suspended by a massless string of length `2//5m` and gets embedded in the bob. After th collision the string moves through an angle of `60^(@)`. The horizontal coordinate of the intital position of the bob w.r.t. the point of firing of the bullet is nA. `(9)/(5)m`B. `(24)/(5)m`C. `(9)/(4)m`D. None of these

A bullet ofmass m is fired with a velocity `10m//s` at angle `theta` w

1.	A bullet ofmass m is fired with a velocity `10m//s` at angle `theta` with horizontal. At the hightest point of its trajectory, it collsides head-on with a bob of mass `3m` suspended by a massless string of length `2//5m` and gets embedded in the bob. After th collision the string moves through an angle of `60^(@)`. The horizontal coordinate of the intital position of the bob w.r.t. the point of firing of the bullet is nA. `(9)/(5)m`B. `(24)/(5)m`C. `(9)/(4)m`D. None of these
Answer» Correct Answer - (B) `(R )/(2) = (2u^(2) sin theta cos theta)/(2g) = ((100)((3)/(5))((4)/(5)))/(10) = (24)/(5) m`

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