Chapter 14, Problem 14.16E

A small block is attached to an ideal spring and is moving in SHM on a horizontal, frictionless surface. When the amplitude of the motion is 0.090 m, it takes the block 2.70 s to travel from x = 0.090 m to x = −0.090 m. If the amplitude is doubled, to 0.180 m. how long does it take the block to travel (a) from x = 0.180 m to x = −0.180 m and (b) from x = 0.090 m to x = −0.090 m?