diego is trying to lift a piano to the second floor of his house. diego uses a pulley system and gives a big…

diego is trying to lift a piano to the second floor of his house. diego uses a pulley system and gives a big lift to the piano. the piano moves upward, then stops, and then it starts to fall to the ground. (the direction of the force of gravity is negative.) which list best describes the forces on the piano in the proper order? positive force → balanced force → negative force negative force → balanced force → positive force positive force → unbalanced force → negative force negative force → unbalanced force → positive force

diego is trying to lift a piano to the second floor of his house. diego uses a pulley system and gives a big lift to the piano. the piano moves upward, then stops, and then it starts to fall to the ground. (the direction of the force of gravity is negative.) which list best describes the forces on the piano in the proper order? positive force → balanced force → negative force negative force → balanced force → positive force positive force → unbalanced force → negative force negative force → unbalanced force → positive force

Answer

Brief Explanations:

When Diego gives a big lift to the piano using the pulley - system, he applies a positive force (opposite to the direction of gravity which is negative) and the piano moves upward. When the piano stops moving upward, the upward force and the gravitational force are balanced. When the piano starts to fall to the ground, the gravitational force (negative force) dominates.

Answer:

positive force → balanced force → negative force