Work in is the energy that goes into the object (how much it could gain). Work out is the energy the object gets out of the energy transfer (how much it actually gained).
An object at the top of a ramp slides down. There is friction.
What is work in?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
An object at the top of a ramp slides down. There is friction.
What is work out?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
An object at rest on the ground is pushed. It begins to move. There is friction.
What is work in?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
An object at rest on the ground is pushed. It begins to move. There is friction.
What is work out?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEp
ΔPEel
An object is against a compressed spring. The spring is released and the object is caused to move along the ground.
What is work in?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
An object is against a compressed spring. The spring is released and the object is caused to move along the ground.
What is work out?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
A 2 kg object is moving 4 m/s. A force pushes on it for 8 m. Afterwards it is going only 10 m/s, due to friction.
What is work in?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
A 2 kg object is moving 4 m/s. A force pushes on it for 8 m. Afterwards it is going only 10 m/s, due to friction.
What is work out?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
A moving object compresses a spring. There is friction.
What is work in?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
A moving object compresses a spring. There is friction.
What is work out?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
An object at rest above the ground. It is dropped to the ground. There is air friction.
What is work in?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
An object at rest above the ground. It is dropped to the ground. There is air friction.
What is work out?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
You push down 2 m on a lever, causing an object to be lifted up 6 m. (Wow! Big lever.)
What is work in?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
You push down 2 m on a lever, causing an object to be lifted up 6 m. (Wow! Big lever.)
What is work out?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
You pull 3 m of rope out of a pulley to lift an object 1.5 m off the ground.
What is work in?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
You pull 3 m of rope out of a pulley to lift an object 1.5 m off the ground.
What is work out?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
An object is pushed up a ramp that has friction.
What is work in?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
An object is pushed up a ramp that has friction.
What is work out?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
A 3 kg object attached to a pole. The object is 2 m above the ground to begin with. A 4 N force moves the object to 6 m above the ground, but there is friction on the pole.
What is work in?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
A 3 kg object attached to a pole. The object is 2 m above the ground to begin with. A 4 N force moves the object to 6 m above the ground, but there is friction on the pole.
What is work out?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
A spring is compressed 0.2 meters. A force pushes it to compress it an additional 0.3 meters. There is friction.
What is work in?
W
Ep
Ek
PEel
ΔEk
ΔEp
ΔPEel
A spring is compressed 0.2 meters. A force pushes it to compress it an additional 0.3 meters. There is friction.