Tidal acceleration of the Earth affected from sun and moon

Question

Basem Nouh 2021-1-13

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/716268-tidal-acceleration-of-the-earth-affected-from-sun-and-moon

回答： SaiDileep Kola 2021-1-19

hey

i want to write a code to calculate the Tidal acceleration in 3 ways

A: Sun and moon in the equatorial plane. Centers of mass of the sun, moon and earth and point P are on a line (center of mass of the earth - P - moon - sun)

.B: Sun and moon in the equatorial plane. The centers of mass of the sun, moon and earth and point P are on a line (P - center of mass of the earth - moon - sun)

.C: Sun and moon in the equatorial plane (as above). Point P is at the North Pole.

i wanted to write a code with case condition but i dont know how to call it, i wanna say if case =A then do this

also i have no idea how to write the vector on Matlab

function [a_t] = gezeitenbesch(G,M_m,M_s,r_e,r_m,r_s)
a_g1 = G*M_m/((r_m)^2);
a_g2 = G*M_s/((r_s)^2);
a_g3 = G*M_s/((r_s+r_e)^2);
a_t1 =a_g1-a_g3;
a_t2 =a_g2-a_g3;
a_t = a_t1+a_t2;
end
% Gravitationsbeschleunigung 
G = 6.67408e-11;   %[m3/kgs2]
M_m = 7.3483e22 ;% [kg]
M_s = 1.989e30;   %[Kg]
r_m = 3.8440*10^8; % [m]
r_s = 1.496*10^11 ; %[m]^3;
r_e = 6378*10^3;
a_t =gezeitenbesch(G,M_m,M_s,r_e,r_m,r_s)

is there any way to plot it ?

thanks

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Answer 1

SaiDileep Kola 2021-1-19

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/716268-tidal-acceleration-of-the-earth-affected-from-sun-and-moon#answer_601189

Go through the process described here to know more about switch cases and to use them just have it in your code, need not do anything else like for functions, check for various ways of using vectors here