A 0.20kg mass is oscillating at a small angle from a light string of length 0.15. What is the period of the pendulum?

The answer would be a) -80of

For me a person with a phd and who knows what there talking about.i know the chances of a radiation leak is low but if it does the area within a 96.3 mile radius would be unusable because of contamination

Answerboth technicians (a) and (b);

Motion i think. hope it