Professor Brown holds on to the end of the second hand of a clock atop city hall. If the second hand is 2.77 m long, what is the professor's centripetal acceleration?

a. 4.27E-2 m/s/s
b. 2.02E-2 m/s/s
c. 2.61E-2 m/s/s
d. 2.29E-2 m/s/5
e. 3.04E-2 m/s/s
f. 3.44E-2 m/s/s
h. 3.91E-2 m/s/s
i. 4.62E-2 m/s/s