A helicopter of mass 9205 kg is hovering 30.5 meters above a field.  Hovering means not going anywhere. This means acceleration is zero. Forces are in the vertical direction. F net = ma, if acceleration is zero, then F net = 0 Force thrust is the force going, but the going  down is -mg,  Thus Force thrust - mg = 0 Force thrust = mg m= 9205 kg g= 9.8 Can you reinforce my understanding, as to, "what must be the upward thrust of the propeller in newtons in order for this to occur?" ?

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!