https://padlet.com/bstretch/pmbhp9yzfa3v Made With Wheels en-us 2017-10-25 00:49:37 UTC 2023-06-23 16:20:00 UTC hello@padlet.com bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/200241060 1. What are they? 
They turn things on and off like a light switch.
Levers at the front of a bike used for the breaks.
Triggers.
Down force and up force. 

All levers have 3 components. 

The place where the force is applied. (effort point) 

The fixed point of the lever rotates on. 

The load that gets moved

2. What do they do?
Levers are a simple machine. 
A lever is a rigid bar that rotates about a point. 

3. Different kinds 
Class one lever]]> 2017-10-25 00:51:34 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/200241060 bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/200243303 2017-10-25 01:07:48 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/200243303 bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/200243469 2017-10-25 01:08:50 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/200243469 bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/200243538 2017-10-25 01:09:23 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/200243538 bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/200245095 Effort point
Fulcrum or pivot point 
land point ]]> 2017-10-25 01:19:49 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/200245095 bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/202353482 What is Friction?

Friction is a force of resistance to the motion of the object. 

Friction arises when the bumps on two surfaces collide. ]]> 2017-11-01 00:35:29 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/202353482 bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/202354974 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 plants. ]]> 2017-11-01 00:49:34 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/202354974 bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/202356019

Stacking chairs 

Fidget Spinner

Vacuum cleaner 

Scooters

Bikes

drawing 

Walking 

hands 

wheels

]]> 2017-11-01 00:58:50 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/202356019 bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/202356943 friction is created when the tyres roll on the road. ]]> 2017-11-01 01:06:47 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/202356943 bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/202358518 Pushing force, motion, friction. ]]> 2017-11-01 01:19:15 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/202358518 bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/202358875 2017-11-01 01:21:22 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/202358875 bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/202359070 2017-11-01 01:22:24 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/202359070 bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/204635967 When two surfaces rub against one another, the resulting friction causes the surface molecules to vibrate. This creates heat. ]]> 2017-11-08 00:39:01 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/204635967 bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/204638803 Oils and Lubricants on mainly metal parts help to -

• reduce friction by allowing the parts to slide past each other. 
• absorb some of the heat and spread it away from the touching surfaces. 

]]> 2017-11-08 00:56:38 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/204638803 bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/204640962 1) What is created when two surfaces rub past each other?

When they rub against each other it creates heat. 

2) what kind of bike tyre would suit riding in the forest? Why?

A fat tyre so that you don't fall over when you are going on hills. 

3) What would happen if you put oil on your bikes break pads?

it would become slippery

]]> 2017-11-08 01:12:20 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/204640962 bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/207489738 sliding, rolling, fluid, and static. ]]> 2017-11-16 01:05:16 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/207489738 bstretch https://padlet.com/bstretch/pmbhp9yzfa3v/wish/207492863 2017-11-16 01:24:54 UTC https://padlet.com/bstretch/pmbhp9yzfa3v/wish/207492863