The difference between rotational motion and circular
motion is that rotational motion is the rotation of a body about it center
mass. The axis of rotation and the center mass could change. For circular
motion, the axis of rotation and the center mass does no change.
Hi! 65 km to mm is 65,000,000 mm! Hope this helped you!
Static equilibrium means that all forces are equal, so make this easiest you want to break F1 into it's horizontal and vertical components. As there are no other forces acting in the horizontal, we know the horizontal component of F1 is 40N. This allows the vertical component to be found using pythagorus theorem. After finding the vertical and horizontal components, you just have to add the vertical components to find the difference between the up and down.