A gun is mounted on a gun-carriage, movable on a smooth horizontal plane with gun elevated at an angle alpha to the horizontal. Given the mass of the gun-carriage system is 'n' times that of the shot and acceleration due to gravity is 'g'. A shot is fired and leaves the gun. The time of flight of the shot (i.e., attains the same horizontal level as the point projection) is

A gun is mounted on a gun-carriage, movable on a smooth horizontal pla

1.	A gun is mounted on a gun-carriage, movable on a smooth horizontal plane with gun elevated at an angle alpha to the horizontal. Given the mass of the gun-carriage system is 'n' times that of the shot and acceleration due to gravity is 'g'. A shot is fired and leaves the gun. The time of flight of the shot (i.e., attains the same horizontal level as the point projection) is
Answer» `(2U SIN alpha)/(3)` `(2u sin alpha)/(9) (1+(1)/(n))` `(2 u COS alpha sin theta)/(3)(1+(1)/(n))` `(2u tan alpha)/(3) (1+(1)/(n))` ANSWER :A