Part A: Picturing Circular Motion Attach a piece of string to a single washer at one end and four washers at the other. Use your finger or a pen in the centre of the single washer to swing it at a consistent, steady rate in a circle, flat against the surface of a table or floor. Complete the investigation showing all your work for any calculations. 4. Draw a picture of the washer group travelling along its circular path at the 12, 3, 6, and 9 o'clock positions. If you release the washer group in those positions, in what direction would it travel? (Warning! Don't release them at people!) At each position draw an instantaneous velocity vector for the washer group. 9 o'clock 12 o'clock 6 o'clock 3 o'clock 5. Draw a FBD for the washer group, at two different positions from your diagram above, one-quarter turn apart. Draw the FBDs looking down from above (bird's eye view). Always ask yourself: at this moment in time, what is pushing or pulling on the object? Note that friction is small enough to be ignored. Include the acceleration vector. OCLD