Problems & Exercises
(a) 2.99541 s
(b) Since the period is related to the square root of the acceleration of gravity, when the acceleration changes by 1% the period changes by so it is necessary to have at least 4 digits after the decimal to see the changes.
(a). 0.123 m
(b). −0.600 J
(c). 0.300 J. The rest of the energy may go into heat caused by friction and other damping forces.