In a Shadow Play, the Actors Are Behind a Translucent

Multiple Choice

In a shadow play, the actors are behind a translucent screen and the audience only sees their two-dimensional shadows on the screen. Assume that the lighting is such that the dimensions of objects are undistorted. In a certain play, a witch is stirring a caldron by moving a spoon, held vertically, in a horizontal circle with a radius of 20 cm, making one revolution every 2.4 s. What is the maximum acceleration of the spoon seen by the audience?

A) 0.35 m/s²
B) 1.1 m/s²
C) 1.4 m/s²
D) 0.48 m/s²
E) 0.52 m/s²