An amateur rocket with a body weight of 6.5 lb is equipped with a rocket engine holding 2....

An amateur rocket with a body weight of 6.5 lb is equipped with a rocket engine holding 2.54 lb of solid propellant with a burnout time (time required to burn all the fuel) of 5.25 s (this is the typical data made available by amateur rocket engine manufacturers). The initial thrust is 68 lb. Assuming that the mass flow rate and the speed of the exhaust relative to the rocket remain constant, determine the exhaust mass flow rate mo and the speed relative to the rocket υo. In addition, determine the maximum speed achieved by the rocket υmax if the rocket is launched from rest and moves in the direction opposite to gravity. Neglect air resistance and assume that gravity does not change with elevation.

Figure P5.134