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it was calculated that a shell when fired from a gun with a certain velocity and at an angle of elevation 5 pi/ 36 rad should strike a given target in the same horz. plane . in actual practice , it was found that a hill just prevented the trajectory . at what angle of elevation should the gun be fired to hit the target .a) 5 pi/36 rad. b) 11 pi/36 radc) 7 pi/36 rad c) 13 pi/36 rad |
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Answer» There are two angles of projection for the same horizontal range, i.e; theta and 90 - theta with the horizontal. The projectile will cover the same horizontal range whether it is thrown at an angle of theta or 90 - theta with the horizontal. |
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