18. [lpt Five objects of equal mass are shown below, together with the axis about which they are rotating. Select the objects in order of increasing rotational energy. Eg., if B has the smallest rotational energy, then A, C, D, and E has the largest, enter BACDE. If several objects have the same rotational energy, enter them in alphabetical order. A. Thin cylindrical shell, about cylinder axis with R 2 m and ω = 5 rad/s B. 2R Thin spherical shell, about any diameter, with R = 3 m and ω-5 rd’s C. 2R solid sphere, about any diameter, with R-3 m and ω-6 rad/s D. Thin rod, about axis through centre perpendicular to the length, with 1 = 9 m and ω = 5 rad/s E. solid cylinder, about cylinder axis with R = 3 m and ω = 6 rad/s Answer: