5 1 For the purpose of evaluating the impact damage of soybeans striking a steel wall it can be assumed that the collision is elastic The modulus of elasticity units of Pa of the soybean can be estimated from the equation In E 20 12 0 55 In M 0 87 where M is the moisture content in percent wet basis Equation for E taken from Misra and Young 1981 a Estimate the maximum force which would be experienced by a soybean of average weight and density having a moisture of 13 w b when it impacts a solid wall at velocities of 1 3 and 5 m s Assume the Poisson s ratio of the soybean is 0 35 Solution hints Calculate the E value using the above equation Remember to use 13 instead of 0 13 for the M value in the equation The young s modulus of steel is much larger than that of the soybean as a result k2 0 The major diameter intermediate diameter and minor diameter of soybean are 7 29 6 43 and 5 38 mm The average of the minor and intermediate diameter 5 905 mm can be used for the value D