A uniform meter stick is pivoted at its center. A 4N force is applied upward at the 25cm mark, and a 4N force is applied downward at the 75cm mark. Neglect all other forces. Which of the following best describes the stick’s immediate motion?
a) Translational acceleration is zero; angular acceleration is nonzero and counterclockwise.
b) Translational acceleration is nonzero upward; angular acceleration is zero.
c) Translational acceleration is zero; angular acceleration is nonzero and clockwise.
d) Translational acceleration is zero; angular acceleration is zero.