Natural frequency is obtained from an equation of motion m CON which has a form of Mx+Kx=0 as 06 04 02 O M The equation of motion of the test rig used in the experiment 3ku is + @=0. See Figure 1 for the geometrical mL parameters 4-1.5 N/mm, a 400 mm, L- 500 mm. Figure 2 is obtained from the experiment. Determine the mass of the beam, m? L/2 a S L Figure 1 02 04 062 OD -1 0 30 Figure 2 m artis 3 mm in diameter, calculate the hardness