A mass of 5 kg is dropped onto the end of a cantilever beam with a velocity of 0.5 m/s, as shown in Figure 3. The impact causes vibrations of the mass, which sticks to the beam. The beam is made of steel (E = 210 x 10N/m), is 2.1 m long, and has a moment of inertia I = 3 x 10-6m and cross sectional area of 9 x 10-6m. Neglect inertia of the beam. Calculate stiffness of the system and its natural frequency. 2.1 m 5 kg Velocity = 0.5 m/s E = 210 x 10 N/m I=3x10 m4