Amass of 1 slug is suspended from a spring whose spring constant is 9 lb/ft. the mass is initially released from a point 1 foot above the equilibrium position with an upward velocity of 3 ft/s. find the times for which the mass is heading downward at a velocity of 3 ft/s. (enter your answers as a comma-separated list. let n represent an arbitrary integer.)

Explain the difference laminar and turbulent flow. explain it with the shear stress and the velocity profiles.

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

Burgers vector is generally parallel to the dislocation line. a)-true b)-false