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1) Friction tends to waste energy.2) The wasted energy gets converted into heat, which may be harmful in some cases - or special measures may have to be taken, to get rid of such waste heat.

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Q: What are two ways friction isn't useful?
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When is friction useful to us?

fricton is useful in many many ways: help in protecting from slipping protect the car from sliding due to friction you can make fire from rubbing two stones. etc......... etc....


Name two ways in which friction can be increased?

Okay 2 ways for the friction to increase is speed and non lubricant


What two ways can you change friction?

Lubrication, is one way.Two ways to reduce friction are :.Lose weight.Wet the surface


What are two ways that a force can change speed?

friction \


What two ways can friction be increased by?

movement and heat


Name two ways to increase friction?

Rougher surface and more weight to the object increases friction


Name two ways that friction is harmful?

The two ways that friction is harmful is that it causes wear and tear of the parts and there is also causes abrasion on surfaces. However, frictions is also useful in various ways like braking when riding a bike and so on.In elevator systems, it is harmful to motor and machine bearings, causes wear. on elevator rails that elevator rides on ,the guide shoes wear and need constant lubrication, unless they use more modern roller guides.


What are two ways you can reduce friction in a machine?

A lubricant such as oil and ball bearings are just (2) methods of reducing friction.


What are two ways that electric charage can be produced?

1. By friction. 2. by magnetism


How do professional bicycle riders reduce friction name two ways?

Thank you


When is friction greatest?

Friction is greatest in the absent of lubrication. This happens when two objects rub against each other and this might be useful or harmful depending on the set up.


Two times when friction is useful?

1. when walking so you do not slip everywhere 2. driving (same reason)