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clc;
G=6.67*10^-11 //universal gravitational constant in Nm square/kg square.
m1=5.98*10^24; //mass of earth in kg
m2=7.36*10^22; //mass of moon in kg
r=3.84*10^8; //radius of moon's orbit
F=(G*m1*m2)/(r*r); //calculating gravitationalforce in Newton
v=sqrt((G*m1)/r); //calculating velocity of moon in m/sec
s=2*%pi*r; //calculating circumference of moon's orbit in metre
t=s/v; //calculating time in sec
disp(F,"Gravitational Force in Newton = "); //displaying gravitational force in Newton
disp(v,"Velocity in metre/sec = "); //displaying velocity in metre
disp(t,"Time in sec = "); //displaying time in sec.
disp(t/86400,"Time in days = "); //displaying time in days
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