Table of Contents
How does friction help you walk?
Friction can be a useful force because it prevents our shoes slipping on the pavement when we walk and stops car tyres skidding on the road. When you walk, friction is caused between the tread on shoes and the ground. This friction acts to grip the ground and prevent sliding. Sometimes we want to reduce friction.
How does friction help in working?
“If Friction is a force that opposes motion then how friction helps in walking?” As we walk we apply a contact force on the surface below and that surface also exerts an equal and opposite contact force on our foot or shoes. This is how friction helps walking, in simple words.
How does friction help to write?
Frictional force helps us in writing with a pen or pencil on a paper. When we write with a pen, this friction causes the ink particles to stay on the paper and dry off. In the absence of friction or in the cases of low friction, like glass slabs, we cannot write with a pencil or a normal pen.
Why should you chew your food thoroughly and slowly What chemical change is involved in chewing?
As you chew your food more digestive enzymes are produced. These help to breakdown food further to assist digestion. The process of chewing also triggers the production of hydrochloric acid in the stomach, this further aids digestion, by regulating the pH to increase acidity levels assisting with food breakdown.
Is friction needed to walk?
You need friction to accelerate when you want to start walking, stop walking, change speeds while walking, etc. This is because you need a horizonal force to change your horizontal speed. This force is friction. It arises due to interactions between your feet and the ground you walk on.
Why is friction not useful?
Friction can also be unhelpful. If you do not lubricate your bike regularly with oil, the friction in the chain and axles increases. Your bike will be noisy and difficult to pedal. When there is a lot of friction between moving parts, energy is transferred to the surroundings, causing heating.
Can we write without friction?
A world without friction would be unlivable. The reason why friction is so important to our world, is because it affects everything that’s in motion. When any object is moving, slipping or sliding in one direction, friction is acting in the opposite direction.