https://padlet.com/etabener/BikeScience Fous en-us 2017-10-25 00:50:08 UTC 2026-02-24 19:50:09 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Send.png etabener https://padlet.com/etabener/BikeScience/wish/200241427 2017-10-25 00:53:59 UTC https://padlet.com/etabener/BikeScience/wish/200241427 etabener https://padlet.com/etabener/BikeScience/wish/200241777 Levers are a simple machine. A lever is a rigid bar that rotates about a point. ]]> 2017-10-25 00:56:16 UTC https://padlet.com/etabener/BikeScience/wish/200241777 etabener https://padlet.com/etabener/BikeScience/wish/200242491 All levers have 3 components:
- The place where the force is applied (effort point).
- The fixed point the lever rotates on ( pivot point/fulcrum point).
- The load that gets moved (load point).]]> 2017-10-25 01:01:32 UTC https://padlet.com/etabener/BikeScience/wish/200242491 etabener https://padlet.com/etabener/BikeScience/wish/200243791 2017-10-25 01:11:07 UTC https://padlet.com/etabener/BikeScience/wish/200243791 etabener https://padlet.com/etabener/BikeScience/wish/200244455 2017-10-25 01:15:24 UTC https://padlet.com/etabener/BikeScience/wish/200244455 etabener https://padlet.com/etabener/BikeScience/wish/200244854 2017-10-25 01:18:13 UTC https://padlet.com/etabener/BikeScience/wish/200244854 etabener https://padlet.com/etabener/BikeScience/wish/202353476 2017-11-01 00:35:25 UTC https://padlet.com/etabener/BikeScience/wish/202353476 etabener https://padlet.com/etabener/BikeScience/wish/202354994 - Friction  is a force of resistance to the motion of an object.
- Friction  arises when the bumps on the two surfaces collide.]]> 2017-11-01 00:49:44 UTC https://padlet.com/etabener/BikeScience/wish/202354994 etabener https://padlet.com/etabener/BikeScience/wish/202355579 - In machines, friction occurs where two surfaces  slide or roll over each other.
- Some parts of a machine are designed to overcome friction, e.g - Wheels (because they roll), ball bearings and oiled parts ]]> 2017-11-01 00:54:45 UTC https://padlet.com/etabener/BikeScience/wish/202355579 etabener https://padlet.com/etabener/BikeScience/wish/202356987 2017-11-01 01:06:58 UTC https://padlet.com/etabener/BikeScience/wish/202356987 etabener https://padlet.com/etabener/BikeScience/wish/202358277 The friction is pushing on the  wheels on a bike. The friction also means that the bike will not fall over. And the brakes too.]]> 2017-11-01 01:17:10 UTC https://padlet.com/etabener/BikeScience/wish/202358277 etabener https://padlet.com/etabener/BikeScience/wish/202359669 2017-11-01 01:25:38 UTC https://padlet.com/etabener/BikeScience/wish/202359669 etabener https://padlet.com/etabener/BikeScience/wish/202359755 2017-11-01 01:26:12 UTC https://padlet.com/etabener/BikeScience/wish/202359755 etabener https://padlet.com/etabener/BikeScience/wish/202359846 2017-11-01 01:26:47 UTC https://padlet.com/etabener/BikeScience/wish/202359846 etabener https://padlet.com/etabener/BikeScience/wish/202359906 2017-11-01 01:27:07 UTC https://padlet.com/etabener/BikeScience/wish/202359906 etabener https://padlet.com/etabener/BikeScience/wish/204638319 When two surfaces rub against one another, the resulting friction causes the surface molecules to vibrate. The creates heat.]]> 2017-11-08 00:53:24 UTC https://padlet.com/etabener/BikeScience/wish/204638319 etabener https://padlet.com/etabener/BikeScience/wish/204639240 Oils and lubricates on moving metal parts help to: 
- reduce friction by allowing the parts slide past each other.
- Absorb some of the heat and spread it away from the touching surfaces.  ]]> 2017-11-08 00:59:05 UTC https://padlet.com/etabener/BikeScience/wish/204639240 etabener https://padlet.com/etabener/BikeScience/wish/204641249 1. Friction and heat are created when 2 things rub ageist each other.
2.  You would use are rough bike tyre.
3. If you put oil on a bike tyre you would not be able to stop as easily. ]]> 2017-11-08 01:13:34 UTC https://padlet.com/etabener/BikeScience/wish/204641249 etabener https://padlet.com/etabener/BikeScience/wish/207492632 2017-11-16 01:23:44 UTC https://padlet.com/etabener/BikeScience/wish/207492632 etabener https://padlet.com/etabener/BikeScience/wish/210644580 2017-11-27 20:21:41 UTC https://padlet.com/etabener/BikeScience/wish/210644580