6. A force of 400 newtons stretches a spring 2 meters. A mass of 50 kilograms is attached to the end of the spring and is initially released from the equilibrium position with an upward velocity of 10 m/s. Find the equation of motion. 7. Another spring whose constant is 20 N/m is suspended from the same rigid support but parallel to the spring/mass system in Problem 6. A mass of 20 kilograms is attached to the second spring, and both masses are initially released from the equilibrium position with an upward velocity of 10 m/s. (a) Which mass exhibits the greater amplitude of motion? (b) Which mass is moving faster at t = π/4 s? At π/2 s? (c) At what times are the two masses in the same position? Where are the masses at these times? In which directions are the masses moving?

answer the problem number 1

I don't get how to get the sides for number 9.

Blank 1 refers to the quality of something that has two sides or halves that are the same or very close in size, shape, and position Blank 1 Add your answer

Please answer the question in the attached file.  The more steps the better as I'm not confident what I've done so far.