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
19,179,382 questions answered
Popular Conversations
Simplify 5t + (t - 3) - [(7t + 5) - (8 - 3t)].
Weegy: 5t + (t - 3) - [(7t + 5) - (8 - 3t)] The simplified form is -4t User: ax + by + c, 2ax - 3by + c, and by - c ...
1/26/2015 12:15:43 PM| 4 Answers
Simplify 5(R + 2) - 6
Weegy: 5(R + 2) - 6 5R + 10 - 6 5R + 4 User: Simplify 3 - (2 - 8) Weegy: (3)/(7)-(4)/(m) = (3m/7m) - (28/7m) = (3m ...
1/26/2015 7:21:10 AM| 3 Answers
If you multiply a trinomial by a monomial, what type of polynomial ...
Weegy: If you multiply two binomials together, the product will be TRINOMIAL. User: When using FOIL to multiply the ...
1/26/2015 8:55:33 AM| 3 Answers
Simplify 3x + (-12x) - 5x. -14x -9x 10x 20x
Weegy: A)-14x. 3x + (-12x) - 5 = -14x User: Simplify 3x + 3 + 2. 3x + 5 5x + 3 8x User: Simplify -12x + ...
1/26/2015 12:27:43 PM| 3 Answers
Solve. m -5= 1/32
1/26/2015 2:19:45 PM| 3 Answers
Our esteem-based needs are met by developing self-respect and ...
Weegy: Our esteem-based needs are met by developing self-respect and achieving our personal goals. This is TRUE. ...
1/26/2015 9:09:19 PM| 3 Answers
What is the difference between variable and fixed costs? User: What ...
Weegy: Productivity in economics refers to metrics and measures of output from production processes, per unit of input. ...
1/27/2015 7:55:37 AM| 3 Answers
What is the product?
1/26/2015 7:44:26 AM| 2 Answers
multiply completely, then place the answers in the proper location on ...
Weegy: x=-1 and x=-1/5 for the equation 5x^2+6x=-1 User: factor the following polynomials, then place the answers in ...
1/26/2015 7:49:09 AM| 2 Answers
Is the given point interior, exterior, or on the circle (x + 2)2 + (y ...
Weegy: (x^4 + 81) (x - 3) = x^5 - 3x^4 + 81x - 243 User: Is the given point interior, exterior, or on the circle ...
1/26/2015 8:07:10 AM| 2 Answers
Weegy Stuff
S
L
Points 1800 [Total 1821]| Ratings 0| Comments 1800| Invitations 0|Offline
S
L
P
L
P
Points 1347 [Total 6624]| Ratings 0| Comments 1347| Invitations 0|Offline
S
1
L
1
L
P
P
L
P
P
Points 600 [Total 15611]| Ratings 0| Comments 600| Invitations 0|Offline
S
L
Points 438 [Total 1119]| Ratings 2| Comments 418| Invitations 0|Offline
S
1
L
L
Points 228 [Total 6928]| Ratings 0| Comments 228| Invitations 0|Offline
S
P
C
L
P
L
1
Points 90 [Total 6678]| Ratings 1| Comments 80| Invitations 0|Offline
S
Points 87 [Total 102]| Ratings 0| Comments 87| Invitations 0|Offline
S
L
Points 80 [Total 1641]| Ratings 0| Comments 80| Invitations 0|Offline
S
Points 63 [Total 445]| Ratings 0| Comments 63| Invitations 0|Offline
S
Points 50 [Total 52]| Ratings 0| Comments 0| Invitations 5|Offline
Home | Contact | Blog | About | Terms | Privacy | Social | ©2014 Purple Inc.