Amass m=4kg is attached to both a spring with spring constant k=37n/m and a dash-pot with damping constant c=4n⋅s/m . the mass is started in motion with initial position x0=5m and initial velocity v0=9m/s . determine the position function x(t) in meters.

A10-kg piece of aluminum sits at the bottom of a lake, right next to a 10-kg piece of lead, which is much denser than aluminum. which one has the greater buoyant force on it? explain. b - the aluminum a) both have the same buoyant force. b) the aluminum c) the lead d) it cannot be determined without knowing their volumes.