Answer:
They will move the fridge if they all push in the same direction, but it will not move with constant velocity
Explanation:
The maximum static friction force is
[tex]F_f = -250 N[/tex] (negative sign since its direction is opposite to the push applied by the people)
Sam can apply a force of 130 N, while Amir and Andre can apply a push of 65 N each, so the total force that they can apply, if they push in the same direction, will be:
[tex]F=130 + 65 +65=260 N[/tex]
This force is larger than the frictional force, so the fridge will start moving.
However, the net force on the fridge will be:
[tex]\sum F = 260 N - 250 N = 10 N[/tex]
And according to Newton's second law,
[tex]\sum F = ma[/tex]
where m is the mass of the fridge and a its acceleration, since the net force is not zero, then the fridge will have a non-zero acceleration, so it will not move with constant velocity.
