What is the sign of the work done on the system and by the system?
If work is applied to the system, $\mathrm {d}W$ term becomes negative making two negatives positive, which is identical to equation (1) and heat added to the system is still positive here.
Conceptually, what is negative work? - Physics Stack Exchange
The work done by the force is positive in the first case and negative in the second. For instance, the direction of the force of gravity on a freely falling body (dropped from rest) points towards the center …
electrostatics - What is the difference between positive negative ...
Mar 2, 2018 · The sign of the potential doesn't really mean anything. You can add an arbitrary constant to the potential and it doesn't affect the behavior of the system, so you can make whatever part you …
The Concept of Work in Electric Fields - Physics Forums
Feb 26, 2010 · The discussion focuses on the concepts of positive and negative work in electric fields, particularly in relation to potential energy (PE). Positive work is done when a force moves an object …
Positive and negative Work, question - Physics Stack Exchange
Nov 20, 2021 · "so positive work indicates a positive kinetic energy change, and negative work equals negative kinetic energy change". Shouldn't it read "net positive work" and "net negative work". Per …
Positive or negative work? - Physics Stack Exchange
Dec 22, 2019 · Given this exercise without values into an Italian physics textbook: Calculates the work required to bring a positive charge from infinity to a finite distance from a negative charge. The result...
Thermodynamics when work being negative or positive
Oct 3, 2013 · The discussion focuses on the sign convention for work in thermodynamics, specifically how to determine whether work is positive or negative. When a system does work on its …
The conservation of energy, why does it work? Negative work vs …
Dec 9, 2010 · Well you may have just been lucky . The work done by a conservative force, like gravity, is the negative of its potential energy change (W g = - ΔPE). For example, if an object is dropped from …
Positive and Negative works - Physics Stack Exchange
Mar 28, 2018 · When we displace a body from ground to a height we do positive work against gravity and gravity too does work but negative. Do they cancel each other? Or does the external force do …
Understanding Positive and Negative Work in Closed PV Graphs
May 5, 2005 · This discussion clarifies the mechanics of closed PV graphs, specifically how to determine positive and negative work within a thermodynamic system. When work is done on the system, its …