The position of an object connected to a spring varies with time according to the expression x = (5.5 cm) sin(7.7t).
(a) Evaluate the period of this motion.
___________s
(b) Evaluate the frequency of the motion.
___________Hz
(c) Evaluate the amplitude of the motion.
___________cm
(d) Evaluate the first time after t = 0 that the object reaches the position x = 2.6 cm.
___________s