Linked from
The 13 pages that link to Counterweight, each with the reason it gives.
ElevatorRelated: Balancing the car reduces the energy required to move it.
SteadicamRelated: Weights on the sled balance the camera and help set its response to movement.
Stage machineryRelated: Adjustable counterweights balance scenery suspended from theatrical rigging.
GuillotineRelated: The raised blade assembly falls under gravity after its restraint is released.
TrebuchetRelated: Its downward fall converts gravitational potential energy into the arm’s rotation.
FunicularRelated: Many funiculars use one car's descent to help pull the other car uphill.
DrawbridgeRelated: Counterweights reduce the force needed to raise many bascule spans.
Gateshead Millennium BridgeRelated: The arch and deck balance one another as the bridge tilts.
ShadoofRelated: It helps raise the filled bucket after the operator pulls it down into the water.