75.1k views
20 votes
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

2 Answers

3 votes

Answer:

A

Explanation:

edg

User Xin Meng
by
5.8k points
10 votes

Answer: positive force → balanced force → negative force

Step-by-step explanation: I just did it

User Lucas Josino
by
7.1k points
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