initial commit / add all books

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+// SAMPLE PROBLEM 3/3

+clc;clear;funcprot(0);

+// Given data

+m_A=250;// The mass of concrete block A in lb

+m=400;// lb

+theta=30;// degree

+mu_k=0.5;// The coefficient of kinetic friction between the log and the ramp

+x=20;// ft

+g=32.2;// The acceleration due to gravity in ft/sec^2

+

+// Calculation

+// SigmaF_y=0;

+N=m*cosd(theta);// lb

+// SigmaF_x=ma_x;

+function[X]=acceleration(y)

+    X(1)=0-((2*y(2))+y(3));

+    X(2)=((mu_k*N)-(2*y(1))+(m*sind(theta)))-((m/g)*y(2));

+    X(3)=(m_A-y(1))-((m_A/g)*y(3));

+endfunction

+y=[100,1,1];

+z=fsolve(y,acceleration);

+T=z(1);// lb

+a_A=z(3);// ft/sec^2

+a_C=z(2);// ft/sec^2

+v_A=sqrt(2*a_A*x);// ft/sec

+printf("\nThe velocity of the block as it hits the ground at B,v_A=%2.2f ft/sec",v_A);