(D)
(E) It is impossible to determine the numerical value of the acceleration without knowing the value
of k.3 . The graph shows the velocity-time for a mass connected to a spring oscillating in simple harmonic
motion. Which of the following graphs best represents the corresponding potential energy (U ) of the
mass as a function of time?
(A)
(B)
(C)
(D)
(E)
4 . A rod of length L and uniform density ρ is suspended through a hole near the end, so it can swing
back and forth about its endpoint. The rod is displaced a small distance and released so that it
oscillates as a pendulum. The time period of its motion will be