Is friction friend or foe?
Friction is a friend
Side Score: 19
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Friction is a foe
Side Score: 18
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2
points
1
point
At 130mph round a long, sweeping, left-hander only to discover someone in front doing no speed at all, and oncoming traffic: yes. Sliding down the road on your back wearing leathers: yes. Sliding down the road on your back in jeans and t-shirt: no. Playing with your partner: yes. Effecting any sort of physical action in the real world: yes. Side: Friction is a friend
1
point
1
point
Friction plays a vital role in our daily life. Without friction we are handicap. 1. It is becomes difficult to walk on a slippery road due to low friction. When we move on ice, it becomes difficult to walk due to low friction of ice. 2. We can not fix nail in the wood or wall if there is no friction. It is friction which holds the nail. 3. A horse can not pull a cart unless friction furnishes him a secure Foothold. Side: Friction is a friend
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Despite the fact that the friction is very important in our daily life, it also has some disadvantages like: 1. The main disadvantage of friction is that it produces heat in various parts of machines. In this way some useful energy is wasted as heat energy. 2. Due to friction we have to exert more power in machines. 3. It opposes the motion. 4. Due to friction, noise is also produced in machines. 5. Due to friction, engines of automobiles consume more fuel which is a money loss. Side: Friction is a foe
3
points
Friction causes wear and tear. example:When you wear the same pair of shoes for a few months there soul wear out. Friction produces heat. since friction produces heat,the engines of car and other machinery become very hot after running for some time. Energy is wasted in overcoming tyhe force of fricriofriction reduces the speed of moving vehicles to a great extent. Side: Friction is a foe
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