Question and answer
how can friction be reduced?
Friction can be increased by using a rougher, or coarser, material. Sand paper is one example. Friction can be reduced by using a smoother material, this can be silk, or very very finely milled metal. [ Additionally, lubricants like oil can be used, the oil gets between where two materials make contact and effectively fills in the gaps to make rough surfaces become smoother, and allow them to
slide past each other more easily. ]
Get an answer
Original conversation
User: a car increases its speed from 80 to 90 km/h in 2 seconds. what is its acceleration? can a bicycle have the same acceleration? how?

User: how can friction be reduced?





Weegy: Friction can be increased by using a rougher, or coarser, material. Sand paper is one example. Friction can be reduced by using a smoother material, this can be silk, or very very finely milled metal. [ Additionally, lubricants like oil can be used, the oil gets between where two materials make contact and effectively fills in the gaps to make rough surfaces become smoother, and allow them to slide past each other more easily. ]
Expert answered|david769|Points 140|

Question
Asked 12/12/2012 4:53:05 AM
0 Answers/Comments
New answers
Rating

There are no new answers.

Comments

There are no comments.

Add an answer or comment
Log in or sign up first.
Questions asked by the same visitor
a car increases its speed from 80 to 90 km/h in 2 seconds. what is its acceleration? can a bicycle have the same acceleration? how? User: cite cases where friction is (a) disadvantages and (b) needed. How can friction be reduced?
Weegy: a1) In a car engine, the parts rub against each other - pistons rub in the cylinders, the crankshaft rubs against its bearings, etc, etc. Sme thing in the transmission. [ The friction between those parts means that you have to apply some force to get the engine and transmission to turn. That means that some of the power of the engine is used to overcome friction instead of actually moving the car - so you use more fuel, which costs you money and releases more pollutants and global warming gases into the atmosphere. It also creates wear on the parts, which will eventually break. In the case of your pistons in the cylinders, wear will result in a bad seal, which means loss of power, and even more wasted fuel. b1) But at the tires, friction is a good thing! The engine turns the wheels, but the thing that gets the car moving forward is the force on the ground applied by the tires. The force that can be applied is related to the friction between the tires and the ground. If you've ever stomped on the gas on a rainy day, you might have noticed that your tires started spinning without actually moving the car, because the layer of water reduces the friction between the tire and the road. The same goes for breaking - the brakes stop the wheels from spinning (as a matter of fact, they use friction to do that, too!), and friction between the tires and the road stops the car. If you try to stop on ice, there might not be enough friction, and you can lose control of your car. a2) If you've ever hung around runners, especially long distance runners, you might have heard them talk about putting band aids over their nipples. That's because as they run, their shirts move across the skin of their chest, and there's friction between the cloth and the skin. ] (More)
Question
Expert Answered
Asked 12/12/2012 4:50:17 AM
0 Answers/Comments
21,969,712 questions answered
Popular Conversations
The etymology of a word is sometimes reflected in its ...
Weegy: Have a great day! Ask Weegy again soon User: The transition word(s) that would best introduce an example ...
8/31/2015 6:25:44 AM| 2 Answers
Find the value of 83 - [59 - (22 - 18)].
Weegy: 83 - (59 - (22 - 18)) =83 - (59 - 4) =83 - 55 =28 User: Find the value of 5 · 2 ^3
8/31/2015 8:28:09 AM| 2 Answers
Find two consecutive integers whose sum is 67. Which of the ...
Weegy: To find two consecutive integers whose sum is 67 use the equation 2x + 1= 67 2x + 1= 67 2x = 67 - 1 2x = ...
8/31/2015 9:51:16 AM| 2 Answers
The ____ is the layer of the atmosphere nearest to Earth's ...
Weegy: Some scientists hypothesize that Earth's ozone layer is being damaged by chlorofluorocarbons. User: a gas ...
8/31/2015 10:33:27 AM| 2 Answers
The sum of two consecutive odd integers is -72 What is the larger ...
Weegy: The larger integer is -135 User: The sum of two consecutive even integers is -34 What is the smaller integer?
8/31/2015 10:38:43 AM| 2 Answers
Weegy Stuff
S
L
L
P
1
Points 27 [Total 9337]| Ratings 1| Comments 17| Invitations 0|Offline
S
Points 23 [Total 807]| Ratings 0| Comments 23| Invitations 0|Offline
S
Points 20 [Total 325]| Ratings 0| Comments 20| Invitations 0|Offline
S
1
L
L
P
R
Points 10 [Total 9333]| Ratings 0| Comments 10| Invitations 0|Online
S
Points 9 [Total 197]| Ratings 0| Comments 9| Invitations 0|Offline
S
Points 3 [Total 227]| Ratings 0| Comments 3| Invitations 0|Offline
Points 0 [Total 0]| Ratings 0| Comments 0| Invitations 0|Offline
Points 0 [Total 0]| Ratings 0| Comments 0| Invitations 0|Offline
S
Points 0 [Total 0]| Ratings 0| Comments 0| Invitations 0|Offline
S
Points 0 [Total 0]| Ratings 0| Comments 0| Invitations 0|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2015 Purple Inc.