4. [0/1 Points] DETAILS PREVIOUS ANSWERS ZILLDIFFEQMODAP11 5.1.014. 1/6 Submissions Used MY NOTES ASK YOUR TEACHER A certain mass stretches one spring - foot and another spring - foot. The two springs are then attached in parallel to a common rigid support in the manner shown in the figure below. rigid support k m The first mass is set aside, and a mass weighing 4 pounds is attached to the double-spring arrangement, and the system is set in motion. If the period of motion is it/20 second, determine how much the first mass weighs. (Use g = 32 ft/s for the acceleration due to gravity.) 41.67 Ib Need Help? Read It Watch It