document.write( "Question 1178041: The resultant force of F1(150N, 030) and F2( x N, 120) is R(y N, 090). Find, correct to two decimal places, the values of x and y \n" ); document.write( "
Algebra.Com's Answer #850374 by CPhill(1987) You can put this solution on YOUR website! Let's solve this problem step-by-step.\r \n" ); document.write( "\n" ); document.write( "**1. Resolve Forces into Components**\r \n" ); document.write( "\n" ); document.write( "* **F1 (150N, 030°):** \n" ); document.write( " * F1x = 150 * cos(30°) = 150 * (√3 / 2) ≈ 129.90 N \n" ); document.write( " * F1y = 150 * sin(30°) = 150 * (1/2) = 75 N\r \n" ); document.write( "\n" ); document.write( "* **F2 (x N, 120°):** \n" ); document.write( " * F2x = x * cos(120°) = x * (-1/2) = -x/2 N \n" ); document.write( " * F2y = x * sin(120°) = x * (√3 / 2) ≈ 0.866x N\r \n" ); document.write( "\n" ); document.write( "* **R (y N, 090°):** \n" ); document.write( " * Rx = y * cos(90°) = y * 0 = 0 N \n" ); document.write( " * Ry = y * sin(90°) = y * 1 = y N\r \n" ); document.write( "\n" ); document.write( "**2. Set Up Equations for Resultant Force**\r \n" ); document.write( "\n" ); document.write( "The resultant force is the vector sum of the individual forces:\r \n" ); document.write( "\n" ); document.write( "* Rx = F1x + F2x \n" ); document.write( "* Ry = F1y + F2y\r \n" ); document.write( "\n" ); document.write( "Substitute the component values:\r \n" ); document.write( "\n" ); document.write( "* 0 = 129.90 - x/2 \n" ); document.write( "* y = 75 + 0.866x\r \n" ); document.write( "\n" ); document.write( "**3. Solve for x**\r \n" ); document.write( "\n" ); document.write( "From the first equation:\r \n" ); document.write( "\n" ); document.write( "* x/2 = 129.90 \n" ); document.write( "* x = 129.90 * 2 \n" ); document.write( "* x = 259.80 N\r \n" ); document.write( "\n" ); document.write( "**4. Solve for y**\r \n" ); document.write( "\n" ); document.write( "Substitute the value of x into the second equation:\r \n" ); document.write( "\n" ); document.write( "* y = 75 + 0.866 * 259.80 \n" ); document.write( "* y = 75 + 224.9928 \n" ); document.write( "* y = 299.9928 N\r \n" ); document.write( "\n" ); document.write( "**5. Round to Two Decimal Places**\r \n" ); document.write( "\n" ); document.write( "* x ≈ 259.80 N \n" ); document.write( "* y ≈ 299.99 N\r \n" ); document.write( "\n" ); document.write( "**Therefore:**\r \n" ); document.write( "\n" ); document.write( "* x ≈ 259.80 N \n" ); document.write( "* y ≈ 299.99 N \n" ); document.write( " \n" ); document.write( " |