metal to metal.... worn out brakes, bad oil pressure
Friction can be harmful or helpful when driving, no matter what time of year. For instance it is helpful when breaking and it is harmful between bearing surfaces. The loss of friction between the tyres and the road during winter can be disastrous.
Friction slows down a car. As such, in order to maintain the velocity of the car, energy, i.e. gasoline, is required due to friction.If there were no friction, an impossible state, the car would require no energy to maintain its velocity once it had achieved the desired velocity.
Cars don't get better gas or mileage.
harmful friction is when friction can do harm or be a problem for example of this is if your skiing down a hill with grass you will have to much friction then you fall and get hurt :p
friction can be harmful because if you stick 2 objects to rub against eachother for to long it will explode
friction can cause: 1) Physical wear and tear of moving parts. 2) degradation of materials by continuous friction. 3) wastage of 70% of energy in car engines. However, friction is useful in: 1) walking 2) car brakes, friction between brake pads and Tyre causes car to slow down. 3) techniques like friction welding.
its harmful to the engine, but without it your car could not move as the tires would just spin. can't have one without the other although things can be done to reduce it in the engine and increase it at the tires.
ko
Yes, friction CAN be harmful, depending on where it occurs. If you'd fall and scrub your knee, that's harmful friction. IF your shoes are chafing and yopu get a blister, that's harmful friction. In a machine, if a bearing becomes warm, that's harmful friction.
it can be harmful when you buy shoes and they are to tight and if your books and binders are really rough and you have a hard time sliding them into your back pack they will rub and cause friction
the front boot of the car increases the friction on the car
it can be harmful when rubbed against skin