free body diagram
Draw force arrows directly on a diagram canvas.
Three small moons are shown. On the diagram, draw gravitational force arrows for the moons. Each arrow should show the direction of a gravity pull on one moon caused by another moon.
Use your mouse, stylus, or finger to draw. Switch to Arrow for vectors, Line for plain segments, Curve for smooth graph sketches, or Label for short annotations, then save when you are ready to upload.