Kindly help 1. A weight of 64 lb stretches a spring 2 ft. The weight is pulled down 6 ft below the equilibrium position and then released. What initial velocity v given to the weight would have the effect of doubling theamplitude of the vibration? Use g = 32 ft/sec?.

50 A 30-lb weight is suspended by a spring that is stretched 2 inches by the weight. Assume a resistance whose magnitude is times the instantaneous velocity in feet per second, If the weight is pulled Vg down 4 inches below its equilibrium position and released, find the time required to reach the equilibrium position for the first time. The weight reaches the equilibrium position for the first time | seconds after it is released. (Do not round until the final answer. Then round to the nearest thousandth as needed.)