Q. The position function x(t) of a particle moving along an x axis is x = 4.5 - 4.5t2, with x in meters and t in seconds.
At what time does particle (momentarily) stop?
Q. A cord of length 1.40 m is fixed at both ends. Its mass per unit length is 1.10 g/m and the tension is 12 N.
What is the frequency of fundamental oscillation?