Math 2306 Homework Due Monday March 26

1. A 25-pound weight, attached to a spring, stretches it 1.28 feet. Determine the equation of motion if the weight is released from equilibrium with a downward velocity of 3 ft/sec.

2. A 96-pound weight stretches a spring 6.4 feet. The weight is placed in a medium which offers a resistance numerically equal to 6 times the velocity. Determine the equation of motion if the spring is released 1 foot below equilibrium with a downward velocity of 1 ft/sec.

Put your answer in the form .

At what time does the weight first pass through equilibrium?