Question

Samantha has a dog that loves to chase flying disks. To keep her disk sperate form other disks, Samantha painted a triangle on it, with one point of the triangle in the center of the disk. As she throws the disk for the dog, what two transformations does the triangle undergo?
Can you help me with this?

Answer 1

(1) The triangle's centroid (which is off center with resoect to the disc) moves along the path of the disc and (2) also wobbles back and forth across the center of the disc, with a frequency equal to the spin frequency f. (3) The triangle also rotates about its own centroid with frequency f.

Answer 2

What are perpendicular lines?