Draw a free-body diagram for the ear of a person properly wearing a mask. You may wish to refer to the figure below to aid you. Note that when properly worn, the mask will pull at an angle below the horizontal. Improper
usage, such as shown in the image on the right, may result in a completely horizontal pull (the arrows in the figure
are not force arrows), but we wish to avoid this. Choose your own labels for the forces but use the angle the
mask force makes with the horizontal.
Include your free-body diagram in your reply. Also, using the math editor, write the component equations of
equilibrium relative to vertical and horizontal axes. Use the labels for your forces, as well as the angle. You may
substitute for the force of gravity, using the mass of the ear.