You pull on a wagon resting on the sidewalk. What will happen next?
The wagon moves because you apply more force to the wagon than it applies to you.
The wagon doesn’t move because the force you apply to the wagon is equal to the force it applies to you:
The wagon moves because you apply more friction to the ground.
The wagon doesn’t move because the wagon applies more force to you than you apply to the wagon.
A glass coffee table is able to apply a maximum normal force of 500 N. The floor that it stands on is able to apply a maximum normal force of 65,000 N. A large object with a mass of 50 kg is lowered into the table using a pulley system. What happens if anything to the table?
Nothing will happen to the table, but it will back with a force equal to its weight.
The table will break, and the object will come to rest on the floor:
The table will move.
The table will not be in equilibrium.
Please help! I have no idea what the answers could be...
2 answers
The third law says the force you exert on the wagon is equal and opposite to the force the wagon exerts on you. Indeed if the maximum friction force is greater than that force the wagon will not move. However the wording does not say that.
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50*g = 50 kg * 9.81 = 490.5 Newtons weight
the table holds, barely, first answer, pushes back up with 490.5 N