A 125-kg (including all the contents) rocket has an engine that produces a constant vertical force (the thrust) of 1720 N. Inside this rocket, a 15.5-N electrical power supply rests on the floor.
a) Find the acceleration of the rocket.
b) When it has reached an altitude of 120 m, how hard does the floor push on the power supply? (draw a free body diagram of the power supply)