A bushy crop with stem cross-sectional diameter 6 mm is to be cut by impact force at a height of 50 mm above the soil surface. Based on the entire stem cross-section, the modulus of elasticity is 1500 N mm⁻² and ultimate tensile strength is 35 N mm⁻². The force in N that would cause failure of the stem due to bending is (Take π = 3.14)