A 1.2 kg mass attached to a horizontal spring has a 8.0 s period of oscillation. Neglect friction and drag. The velocity versus time graph for this mass-spring system is shown at right. What is the earliest time that the net force on the mass is zero?
A. 0 s.
B. 2 s.
C. 4 s.
D. 6 s.
Answer:B
A 1.2 kg mass attached to a horizontal spring has a 8.0 s period of oscillation. Neglect friction and drag. The velocity versus time graph for this mass-spring system is shown at right. What is the earliest time that the net force on the mass is zero?
A. 0 s. B. 2 s. C. 4 s. D. 6 s.