A shortwave radio antenna is constructed from circular tubing, as is illustrated in Fig. P9.79. Estimate the wind force on the antenna in a 100-km/hr wind.

ENGR 232 Dynamic Engineering Systems Lecture 1 Introduction to Numerical Solutions with Differential Equations Dr. Michael Ryan Perspective Solutions to 1 Order ODEs • Analytically - Separation of variables– quantitative • Explicit solution Implicit Solution • Qualitative analysis ▯▯ • Sketch ▯▯, find EQ. Plot trajectories about EP • Direction field –Graphical technique to sketch solution curve versus time, grid spacing • Numerical Solution of DE • Euler’s methodRunge-Kutta etc. • Analog Computer - future lab(Simulink) Read Chapter1 and 18 of Schaum’s Outline ENGR 232 Spring14-15