Weight Components on a Ramp mg 1. Weight vector points down with a size of mg. The ramp angle is . x y 2. Draw x-y axes with x-axis parallel to ramp. This makes y-axis perpendicular to ramp. A C 3. Draw the component right triangle ABC showing the x-component and y-component of the weight vector. B  D 4. Draw the right triangle ADC. Note angle ADC is . 90-  5. Thus, angle BAC is 90- .   6. Examine the component right triangle ABC. Note angle ABC is . mg cos mg sin 7. The x-component is opposite this angle  so is given by mg sin . The y-component is adjacent to this angle  so is given by mg cos.