Work Formula
Work is the mechanical way of transferred of energy.
General formula:
W = F × S
W= work
F= Force
S = Displacement
In general formula of work is force multiple by displacement that is when we applied the force to one thing how much it displace From their place by work done.
Formula for mechanical work or gaseous system:
W = – Pext∆V
W= work
Pext.= External pressure
∆V = Change in volume
- If gas expand then Volume increase and change in volume (∆V =+ve ) will be positive and work (W= -ve ) negative. So we said that work done by gas.
- If gas is compressed then Volume decrease and change in volume (∆V = – ve ) will be negative and work ( W = + ve ) positive , so we said that work done on the gas.