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Jiptesh answered 1 year(s) , 8 month(s) ago

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  ...

Jun 4

• 60 Likes
• 201063 Views

Jun 4

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...

Apr 8

• 9 Likes
• 43677 Views

Apr 8

Sidda commented 1 year(s) , 3 month(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...

Mar 9

• 2 Likes
• 24977 Views

Mar 9

Amarnathreddy answered 4 year(s) , 11 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...

Jul 9

• 7 Likes
• 22363 Views

Jul 9

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...........

Nov 14

• 0 Like
• 17807 Views

Nov 14

Himanshu answered 3 year(s) , 10 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...

Jul 20

• 1 Like
• 17326 Views

Jul 20

Amarnathreddy answered 3 year(s) , 10 month(s) ago

Give two examples showing the harmful effects of friction.

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

Jul 9

• 1 Like
• 14530 Views

Jul 9

Amarnathreddy answered 3 year(s) , 10 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

Jul 9

• 1 Like
• 13101 Views

Jul 9

Sanjana answered 4 year(s) , 8 month(s) ago

what will happen if friction vanishes?

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

Jul 3

• 2 Likes
• 11279 Views

Jul 3

Amarnathreddy answered 5 year(s) , 2 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...

Apr 8

• 4 Likes
• 9961 Views

Apr 8

Amarnathreddy answered 3 year(s) , 10 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...

Jul 14

• 0 Like
• 9793 Views

Jul 14

Shikhar answered 5 year(s) , 3 month(s) ago

Streamlined shape

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

Feb 22

• 2 Likes
• 9153 Views

Feb 22

Amarnathreddy answered 5 year(s) , 8 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?
Static friction:  ...

Sep 28

• 0 Like
• 8981 Views

Sep 28

Amarnathreddy answered 3 year(s) , 11 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.

Jul 7

• 4 Likes
• 8285 Views

Jul 7

Agam answered 1 year(s) , 8 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...

Mar 2

• 2 Likes
• 7446 Views

Mar 2

Amarnathreddy answered 3 year(s) , 11 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.

Jul 7

• 0 Like
• 7116 Views

Jul 7

Seema answered 3 year(s) , 9 month(s) ago

Working Principle of a spring balance

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

Jul 10

• 0 Like
• 6662 Views

Jul 10

Janhavi answered 3 year(s) , 10 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.

Jul 11

• 1 Like
• 5701 Views

Jul 11

Aman answered 4 year(s) , 8 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

Jul 9

• 1 Like
• 5590 Views

Jul 9

Sruthi answered 5 year(s) , 1 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.

Apr 15

• 2 Likes
• 5512 Views

Apr 15

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