Answer Happy

4. A Cantilever beam deflects downwards when a mass is attached to its free end. The deflection() is the function of beam stiffness(K), applied mass(M) and gravitational force(g = 9.81 m/s2): K8 = Mg The various mass are placed on the end of the beam and corresponding deflections are noted as follows: Mass 0 50.15 99.90 150.05 200.05 250.20 299.95 350.05 401.00 Deflection 0 0.6 3.6 6.2 7.5 18 3.0 4.8 6.0

Using the "Correlation coefficient" equation, check whether the line-fitting' has; (i) strong positive linear relationship (ii) strong negative linear relationship (iii) no linear relationship