A mass m
is attached to a spring of force constant 77 N/m
and allowed to oscillate. The figure below (Figure 1) shows a graph of its velocity vx
as a function of time t
.
Figure1 of 1
A graph shows the velocity as a function of the time. The time t is measured on the horizontal axis from negative 0.4 to positive 2.0 seconds. The velocity v subscript x is measured on the vertical axis from negative 20 to positive 20 centimeters per second. The sinusoidal curve starts at negative 0.4 seconds and 0 centimeters per second and extends to positive 2.0 seconds and zero velocity. It has two crests of positive 20 centimeters per second at times of 0 and 1.6 seconds. The sinusoid also has a trough of negative 3.0 centimeters at 0.8 seconds. Find the times (greater than zero) at which the maximum acceleration occurs.
Express your answers in seconds to one decimal place separated by commas.