Question

A stopwatch has a hand of length 2.5 cm that makes one complete revolution in 10 sec.

(a) What is the vector displacement of the tip of the hand between the points marked 6 sec and 8 sec? (Take an origin of rectangular coordinates at the center of the watch-face, with a y axis passing upward through t = 0.)

(b) What are the velocity and acceleration of the tip as it passes the point marked 4 sec on the dial in cartesian and polar coordinates?

(Page 127).

Answer 1