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Question & Answer Forum

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Jiptesh answered 1 year(s) , 4 month(s) ago

what are the advantage and disadvantage of friction?

ADVANTAGES OF FRICTION Friction plays a vital role in our daily life. Without friction we are handicap. 1. It is becomes difficult to walk on a slippery road due to low friction. When we move on ice, it  ...

Asked by Smitha

Jun 4

  • 7 Answers
  • 47 Likes
  • 173898 Views
Syeda answered 1 year(s) , 8 month(s) ago

Give examples to show that friction is both a friend and a foe.

Friction can be both friend and foe.
FRIEND:
1 It helps in construction of buildings.
2 It helps in walking on the ground.
FOE:
1 soles of shoe and tyres of vehicles wear...

  • 8 Answers
  • 9 Likes
  • 41181 Views
Sidda commented 11 month(s) , 13 day(s) ago

Explain, why rolling friction is less than sliding friction?

Rolling friction is the force resisting the motion when a body (such as a ball, tire, or wheel) rolls on a surface. Sliding friction is the force resisting the motion when a body slides on a surface. The force...

Asked by Ratnadeep

Mar 9

  • 3 Answers
  • 2 Likes
  • 21535 Views
Amarnathreddy answered 4 year(s) , 7 month(s) ago

Cutting edge of a knife made sharp. Why?

Why does the cutting edge of a knife made sharp?
 
Answer:  The cutting edges of tools like blades, knives etc., are provided with sharp edges to cut the thing...

Asked by Shreenidhi

Jul 9

  • 1 Answer
  • 7 Likes
  • 20487 Views
Syeda answered 1 year(s) , 8 month(s) ago

why is it difficult to walk on a smooth or wet floor

it is difficult to walk on smooth and wet floor because the friction is less and the required grip is not available so, sometimes we slip on wet floor...........

Asked by Punmaram

Nov 14

  • 7 Answers
  • 0 Like
  • 16512 Views
Himanshu answered 3 year(s) , 6 month(s) ago

why the shape of an aeeroplane or a ship is streamlined?

Best Answer:    Airplanes are streamlined so that they experience less friction with the air around them as they fly. Friction slows the airplane down and causes it to consume more fuel, so reducing friction is...

Asked by Arunabha

Jul 20

  • 3 Answers
  • 1 Like
  • 15536 Views
Amarnathreddy answered 3 year(s) , 6 month(s) ago

Give two examples showing the harmful effects of friction.

Disadvantages of Friction
       •  Friction causes moving objects to stop or slow down.
       •  Friction produces heat causing wastage of energy in machines.
       •...

Asked by Sanjeev

Jul 9

  • 1 Answer
  • 1 Like
  • 12420 Views
Amarnathreddy answered 3 year(s) , 6 month(s) ago

Mention three simple methods of reducing friction.

not three but two of them are-
use a lubricating material
make the two surfaces smooth in order to reduse friction

Asked by Sanjeev

Jul 9

  • 2 Answers
  • 1 Like
  • 12408 Views
Sanjana answered 4 year(s) , 4 month(s) ago

what will happen if friction vanishes?

we would not be able to do anything as there will be no grip

Asked by Gautami

Jul 3

  • 7 Answers
  • 2 Likes
  • 10820 Views
Amarnathreddy answered 3 year(s) , 6 month(s) ago

Why do we slip off and fall when we step on a banana peel?

As we know friction is necessary for a body to walk  because according to  Newton 's third law of motion, (every action has an equal and opposite reaction), therefore, we can walk only if the ground we are walk...

Asked by Mehak

Jul 14

  • 1 Answer
  • 0 Like
  • 9511 Views
Amarnathreddy answered 4 year(s) , 10 month(s) ago

Objects moving in fluids must have special shapes. Why?

Objects moving in fluids must have special shapes. Why?
Answer: Objects moving in fluids faces the fluid friction which opposes their motion. So to reduce the fluid fr...

  • 1 Answer
  • 4 Likes
  • 8732 Views
Shikhar answered 4 year(s) , 11 month(s) ago

Streamlined shape

What is streamlined shape and give one example
Answer:  
A special shape of the bodies which reduces the fluid friction is called as the streamlined shape.
Example: Aquatic animals like...

Asked by SUPRAJA

Feb 22

  • 4 Answers
  • 2 Likes
  • 8136 Views
Amarnathreddy answered 3 year(s) , 6 month(s) ago

Why kabaddi players rub their hands with the soil before the game starts

The kabaddi players rub their hands with the soil before the game start, because the soil increases the rough ness and hence  the friction while catching the player firmly such that not to slip.

Asked by Sanjeev

Jul 7

  • 1 Answer
  • 4 Likes
  • 7518 Views
Agam answered 1 year(s) , 4 month(s) ago

why do sports men wear spike shoes while playing foot ball ?

Because spikes are not smooth they are rough. And the more objects are rough the more you will be able to stay still. Its is because rough objects interlock with the surface and you won't fall . If you wear nor...

Asked by Kirubes

Mar 2

  • 4 Answers
  • 2 Likes
  • 6917 Views
Amarnathreddy answered 5 year(s) , 4 month(s) ago

what is the difference between static and sliding friction?for a given pair of objects,which of the two is greater?

What is the difference between static and sliding friction? For a given pair of objects, which of the two is greater?
Answer:
Static friction:  ...

Asked by Sanjay

Sep 28

  • 2 Answers
  • 0 Like
  • 6660 Views
Amarnathreddy answered 3 year(s) , 6 month(s) ago

Why soles of shoes are grooved

Soles of shoes are grooved because the grooves increases the friction and gives the good grip to the person while walking with shoes.

Asked by Sanjeev

Jul 7

  • 1 Answer
  • 0 Like
  • 6293 Views
Seema answered 3 year(s) , 5 month(s) ago

Working Principle of a spring balance

A spring balance is a device used to measure the weight of of an object.

Asked by Shreenidhi

Jul 10

  • 2 Answers
  • 0 Like
  • 6125 Views
Janhavi answered 3 year(s) , 6 month(s) ago

why is it more difficult to pull a boat on the beach than on the sea ?

The friction between the boat and the beach (sand) is much greater than that between the boat and the sea. That is why it is more difficult to pull a boat on the beach than on the sea.

Asked by Sanjeev

Jul 11

  • 1 Answer
  • 1 Like
  • 5373 Views
Aman answered 4 year(s) , 4 month(s) ago

What are the two examples of situations in which it is helpful to increase friction?????

again one more helpful thing is the grooves ont he tyres of veichles and the soles of our shoes which increases the frictionhelps us to make a good grip ehile waling on the road

Asked by Shreenidhi

Jul 9

  • 3 Answers
  • 1 Like
  • 4859 Views
Sruthi answered 4 year(s) , 9 month(s) ago

what is electrostatic force?

lectrostatic force is caused by electric charges and is the force of attraction or repulsion between particles. Electrostatic force can be calculated by the coulomb's law.

Asked by Ayath

Apr 15

  • 1 Answer
  • 2 Likes
  • 4603 Views
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