1. What happens when oil is added to the car engine? How does it help the car to perform better?
2. Why is friction considered as 'Evil' of all motions? Explain with examples.
3. What type of friction is used in the water parks and in car wheels? How are you able to slide so easily in
water parks?
Answers
Answer:
1 - when oil is added to the car engine it helps the car to move smoothly and perform better as oil acts as a lubricant or a grease to the car.
2- the friction is considered to be an evil at times because it does wear and tear the objects for ex-when we fall down on a road , the hurt is bigger when compared to the fall in friction less floor(smooth). it is also an evil because is at times starts burning the object.
3-this is because of the kinetic friction. we are able to slide so easily in water parks as it frictionless
Answer:
2.It is because of friction we are able to walk, write ,eat, apply brake, fix a nail to wall, construct buildings etc. Friction is An Evil: it causes wear and tear of machinery. Excessive friction between rotating parts of a machine produce enough heat and causes damage to machinery.