work done on and by the system

[Hector Acosta Discussion 1H]

when is work lost, when the system does work or work is done on the system?

[Abdullah2I]

Yeah, i have the same question.

[Cynthia Tsang]

Work is negative when the system does work. Work is positive when work is done on the system.

[Cali Rauk1D]

W is negative if work is done on the system and w is positive if work is done by system

[Sophia Kim 1C]

I'm fairly certain that work is positive (energy gained) when work is done BY the system and work is negative (energy lost) when work is done ON the system

[Nehal Banik]

WORK itself is NEGATIVE when the system itself performs work on the surroundings, therefore logically WORK will be POSITIVE when work is done on the system.

[Manasvi Paudel 1A]

When work is being done by the system, w will be positive. When work is being done on the system, w will be negative.

[Justin Chu 1G]

Work is positive when work is done by the system and negative when work is done on the system.

[Kayla Ikemiya 1E]

When work is positive, work is done on the system. When work is negative, work is done by the system.

[Nathan Tu 2C]

Work is a method of transferring energy. When work is done on the system, it has a positive value because the internal energy increases. When work is done by the system, it has a negative value because the internal energy of the system decreases.

[Bansi Amin 1D]

When given a word problem, how can we tell that work is being done on the system or by the system?

[Joyce Gu 1E]

When given a word problem, how can we tell that work is being done on the system or by the system?

Work to system --> -w
Work from system --> +w

[Troy Tavangar 1I]

When w is negative, work is by the system whereas when work is positive, work is done on the system.