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Can anyone list 10 advantages and disadvantages of friction?
why does rough surface have greater friction then smooth surface?
give 10 examples of friction in our daily life.
if you try to hold a glass with oil on your hands it tends to slip.why?
What are the methods of reducing friction? Explain .
Two bodies in contact but not moving with respect to each other can exert
1.no friction on each other,
2.static friction on each other,
3.sliding friction on each other or
4.rolling friction on each other.
What are the problems faced by people living in desert areas?
explain why sliding friction is less than static friction?
write various techniques adopted by human beings to reduce energy losses due to friction
can u solve this riddle:
In some situations, I oppose the motion in other situation, I facilitate the motion but, i always oppose the relative motion between two moving surfaces. put some lubricant, and i become small there. Make the moving surfaces rough i make the movement tough. I may be- static, sliding or rolling but whenever two surfaces are in motion I am always there, Tell me who I am!!!!
Explain Friction as necessary evil?
friction a necessary evil
why metal chains are wrapped on tyres when they run on icy roads ?
IMAGINE THAT FRICTION SUDDENLY VANISHES. HOW WOULD LIFE BE AFFECTED. LIST TEN SUCH SITUATIONS
give three examples of increase and decrease friction.
What is the difference between force and friction?
WHAT ARE THE CHEMICALS PRESENT IN MATCHSTICK?
give example to show that friction is both a friend and a foe?
A weightlifter rubs powder in the hands before lifting a weight so as to increase the amount of friction in between the hands and the rod. This helps the lifter to have a better grip on the rod.
How can the amount of friction increase if powder is applied? Isnt it a lubricant?
Why is rolling friction less than sliding friction??
60g of ice at 0°C is added to 20g of water at 40°. The final temperature attained by the mixture is (given
What are the differences between sliding and rolling friction ? ...(atleast 3)
Explain why the sole of our shoe wear out.
Arrange in ascending order-
Rolling friction; Sliding friction; Static friction; Kinetic friction; Fluid friction
why is 'static friction'called a self adjusting force?
how 2 make webpages on pollution i jst need d HTML code plzz
IS rolling friction more than sliding friction? true or false
how does friction helps us in walking?
on what principle do ball bearings work
Water comes out more slowly from upstairs tap than from a similar
why spaceships are provided with heat shields
What role does friction play in the sport of your choice? Collect some pictures of that sport in action where friction is either supporting it or opposing it. Display these pictures with proper captions on the bulletin board of your classroom
what will happen if friction suddenly vanishes from our life
Why is friction called a perverse force ?
why is rolling friction less than sliding friction?
How is a nail fixed in the wall due to friction?
Why do we sprinkle fine powder on the carom board while playing?
mention three effects (consequences) of friction.
what is streamlining ??
what difference will you hear in a sound if there is an increase in
a)amplitude of vibration
b) frequency of vibration
is friction a friend or foe?
a glass -top table is very smooth , but even then a rolling ball stops after some time . why ?
A car travels a certain distance with a speed of 50 km/hr and returns with a speed of 40 km/hr. Calculate the averagespeed for whole journey.
explain an activity to show that friction depends on the nature of two surfaces in contact .
GIVE REASON WHY POWDER IS SPRINKLED ON THE CARROM BOARD
What role does friction play in the sport of your choice?
why do we slip while stepping on a banana peel?
why is very heavy furniture like cupboard usaually fitted with wheels?
Why are the worn out tyres discarded?
why do painters use sand paper before painting the doors??
A coin of mass 20 g is pushed on a table. The coin starts moving at a speed of 25 cm/s and stops in 5 seconds. Find the force of friction exerted by the table on the coin.
imagine thet friction suddenly vanishes,how would life be affected.list ten such situation
Give five examples to show that friction is increased deliberately.
explain why the handles of motor cyclenr covered with a rubber sheet with spikes????
how does friction acts when we are writing with a chalk in blackboard?
why do they say that a building cannot be constructed if there was no friction and that a nail fixed on a wall is due to friction.
kabaddi players rub thier hands with the soil before the game starts
What is the relationship among (a) magnitude of friction and the weight of a body, (b) friction and nature of surfacesin contact with each other, (c) friction and the area of the surfaces in contact with each other?
why are grooves provided in the soles of shoes
Why does the sportsmen use shoes with spikes?
why do gymnasts apply a coarse substance to their hands
Give two examples where friction is (a) Useful (b) A nuisance.
Why do painter uses and paper in white washing the walls and in polishing doors?
Why friction is a necessary evil?
how and where is frictional force active when someone is drawing water from a well?
why are the bodies of birds streamlined
Why few drops of oil are poured on the hinges of the door?
(a) rollers are used for transporting luggage.
(b) metal chains are wrapped on tyres when they run on icy roads.
(c) aeroplanes and car bodies, are made more pointed along their fronts.
(d) talcum powder is put on a carrom-board before a game.
What kind of friction comes into play: (a) When a block of wood kept on table moves slowly? (b) When a block of wood kept on table just tends to move ( or slip) (c) When a block of wood kept on cylindrical iron rods moves
WHY DO WE SLIP ON A MUDDY ROAD AND WHEN WE STEP ON A BANANA PEEL?
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