document.write( "Question 1178658: Find the magnitude and direction of the resultant for Vq = 5 ms and Vp 6ms. with angle 120 degrees between the two lines. \n" ); document.write( "
Algebra.Com's Answer #850314 by CPhill(1959)![]() ![]() You can put this solution on YOUR website! Let's break down how to find the magnitude and direction of the resultant vector.\r \n" ); document.write( "\n" ); document.write( "**1. Represent the Vectors:**\r \n" ); document.write( "\n" ); document.write( "* **Vq:** Magnitude = 5 ms, Direction = 0 degrees (we can assume it's along the x-axis for simplicity). \n" ); document.write( " * Vq = 5i + 0j \n" ); document.write( "* **Vp:** Magnitude = 6 ms, Direction = 120 degrees. \n" ); document.write( " * Vp_x = 6 * cos(120°) = 6 * (-1/2) = -3 ms \n" ); document.write( " * Vp_y = 6 * sin(120°) = 6 * (√3 / 2) = 3√3 ms \n" ); document.write( " * Vp = -3i + 3√3j\r \n" ); document.write( "\n" ); document.write( "**2. Find the Resultant Vector (Vr):**\r \n" ); document.write( "\n" ); document.write( "* Vr = Vq + Vp \n" ); document.write( "* Vr = (5i + 0j) + (-3i + 3√3j) \n" ); document.write( "* Vr = (5 - 3)i + (0 + 3√3)j \n" ); document.write( "* Vr = 2i + 3√3j\r \n" ); document.write( "\n" ); document.write( "**3. Find the Magnitude of the Resultant (||Vr||):**\r \n" ); document.write( "\n" ); document.write( "* ||Vr|| = √(Vr_x² + Vr_y²) \n" ); document.write( "* ||Vr|| = √(2² + (3√3)²) \n" ); document.write( "* ||Vr|| = √(4 + 27) \n" ); document.write( "* ||Vr|| = √31 \n" ); document.write( "* ||Vr|| ≈ 5.57 ms\r \n" ); document.write( "\n" ); document.write( "**4. Find the Direction of the Resultant (θ):**\r \n" ); document.write( "\n" ); document.write( "* θ = arctan(Vr_y / Vr_x) \n" ); document.write( "* θ = arctan(3√3 / 2) \n" ); document.write( "* θ = arctan(5.196 / 2) \n" ); document.write( "* θ = arctan(2.598) \n" ); document.write( "* θ ≈ 68.96 degrees\r \n" ); document.write( "\n" ); document.write( "**Therefore:**\r \n" ); document.write( "\n" ); document.write( "* **Magnitude of the Resultant:** √31 ms (approximately 5.57 ms) \n" ); document.write( "* **Direction of the Resultant:** Approximately 68.96 degrees (measured counter-clockwise from the x-axis, or the direction of Vq). \n" ); document.write( " \n" ); document.write( " |