[b-sh-b]

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هذا السؤال:
A 145-Kg (including all the contents) rocket has an engine that produces a constant vertical force (the thrust) of 1700N . Inside this rocket, a 18.6-N electrical power supply rests on the floor.
Find the acceleration of the rocket.
When it has reached an altitude of 120m , how hard does the floor push on the power supply? (Hint: Start with a free-body diagram for the power supply.)
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