The horizontal component of soil forces acting on the front gang of a right hand offset disc harrow in the directions parallel and perpendicular to the direction of motion are $8 \mathrm{kN}$ and $3 \mathrm{kN}$, respectively. The corresponding forces on the rear gang are $6 \mathrm{kN}$ and $7 \mathrm{kN}$, respectively. If the horizontal component of pull acts towards the left of the direction of motion, its magnitude in $\mathrm{kN}$ will be______________

The horizontal component of soil forces acting on the front gang of a right hand offset disc harrow in the directions parallel and perpendicular to the direction of motion are $8 \mathrm{kN}$ and $3 \mathrm{kN}$, respectively. The corresponding forces on the rear gang are $6 \mathrm{kN}$ and $7 \mathrm{kN}$, respectively. If the horizontal component of pull acts towards the left of the direction of motion, its magnitude in $\mathrm{kN}$ will be______________

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