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STEP SIZE (delta z)=1

please explain code thanks

use Heuns Method please

The following equation can be used to model the deflection of a sailboat mast subject to a wind force: dy f (L z)? dz2 2E1 where f = wind force, E = modulus of elasticity, L = mast length, and I = moment of inertia. Calculate the deflection if y = 0 and dy/dz = 0 at z = 0. Use parameter values of f = 60, L = 30, E = 1.25 X 10', and I = 0.05 for your computation. 28.20 Perform the same computation as above , but rather than using a constant wind force, employ a force that varies with height according to (recall Sec. 24.2) 2002 5 + z f(z) e -2z/30