A fixed crane has a mass of 1000 kg and is used to lift a 2400 kg crate. It is held in place by a pin at A and a rocker at B. The centre of gravity of the crane is at G. (B is 1.5 m directly below A and the rocker gives a horizontal reaction only; G is 2 m and the crate 6 m horizontally from the line AB.) Determine the horizontal reaction at B and the vertical reaction at A. (answers in kN)