Linked from
The 79 pages that link to Friction, each with the reason it gives.
Wheel and axleRelated: Bearing and contact friction reduce the machine’s useful output.
HandrailRelated: Friction between the hand and rail helps prevent the grasp from slipping.
Bicycle brakeNarrower topic: Friction at the pad and braking surface slows wheel rotation.
Bowden cableRelated: Contact between wire and housing creates friction that raises operating force.
Rocking chairRelated: Floor friction affects how readily the runners roll and whether they slip.
Rubber bandRelated: Friction between the band and wrapped objects helps prevent slipping.
Water slideRelated: Water reduces contact friction between riders and the slide surface.
JengaRelated: Contact friction determines how much force is needed to slide a block free.
Linear motionRelated: It can slow or prevent linear motion between contacting surfaces.
Playground slideRelated: It slows sliding and depends on the surfaces and clothing involved.
TetherballRelated: Contact with the pole and rope affects how readily the rope winds and holds.
Bumper carsRelated: Tire friction lets drivers steer and helps collisions slow the cars.
HairbrushRelated: Friction between bristles and hair lets strokes smooth and reposition strands.
Toy blockRelated: Friction between block faces helps stacked pieces remain in place.