Mass on a Spring: in the Figure, Two Masses, M

question 28

Multiple Choice

Mass on a spring: In the figure, two masses, M = 16 kg and m = 12.8 kg, are connected to a very light rigid bar and are attached to an ideal massless spring of spring constant 100 N/m. The system is set into oscillation with an amplitude of 78 cm. At the instant when the acceleration is at its maximum, the 16-kg mass separates from the 12.8-kg mass, which then remains attached to the spring and continues to oscillate. What will be the amplitude of oscillation of the 12.8-kg mass?

• A) 78 cm
• B) 62 cm
• C) 35 cm
• D) 98 cm
• E) 180 cm

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