Forces

Balanced

This picture shows two people pushing a box with the same amount of force, so the box is not moving.

This picture shows two people playing tug of war. They are pulling with the same amount of force, so nobody is winning.

This picture shows a book resting on a table. The weight of the book and the reaction force of the table are equal, so nothing is moving.

Unbalanced

This picture shows two people pulling a rope. The guy on the right is pulling with more force, so the rope is moving toward him.

This picture shows two people pushing a trolley. The person on the right is pushing with more force than the person on the left, so his trolley is moving faster.

This picture shows a man lifting a weight. Gravity is pushing with more force than he is, so the weight is moving down.

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