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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.
What are the methods of reducing friction? Explain .
Arrange in ascending order-
Rolling friction; Sliding friction; Static friction; Kinetic friction; Fluid friction
What are the problems faced by people living in desert areas?
What is the difference between force and friction?
explain why sliding friction is less than static friction?
What is a streamlined body? How is it helpful for a body to have such a shape?
write various techniques adopted by human beings to reduce energy losses due to friction
IS rolling friction more than sliding friction? true or false
Explain Friction as necessary evil?
would you be able to suck juice with a drinking straw on the moon ?give reason?
friction a necessary evil
IMAGINE THAT FRICTION SUDDENLY VANISHES. HOW WOULD LIFE BE AFFECTED. LIST TEN SUCH SITUATIONS
give three examples of increase and decrease friction.
why do gymnasts apply a coarse substance to their hands
WHAT ARE THE CHEMICALS PRESENT IN MATCHSTICK?
give example to show that friction is both a friend and a foe?
Why is rolling friction less than sliding friction??
What are the differences between sliding and rolling friction ? ...(atleast 3)
Explain why the sole of our shoe wear out.
why is 'static friction'called a self adjusting force?
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?
how 2 make webpages on pollution i jst need d HTML code plzz
how does friction helps us in walking?
Water comes out more slowly from upstairs tap than from a similar
Taking one light year equal to 9.4 x 1015 m and one day equal to 86400 seconds, what will be the speed of light in light year per day if the speed of light in m s-1 is 3 x 108 ?
why spaceships are provided with heat shields
what is streamlining ??
what will happen if friction suddenly vanishes from our life
'When we walk, we press the ground in the backward direction, using our feet. Since friction acts in the opposite direction of motion, it pushes us forward. Hence, we are able to walk.'I dont understand this.. explain???
why is rolling friction less than sliding 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!!!!
Why do we sprinkle fine powder on the carom board while playing?
explain why the handles of motor cyclenr covered with a rubber sheet with spikes????
mention three effects (consequences) of friction.
is friction a friend or foe?
Why few drops of oil are poured on the hinges of the door?
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.
GIVE REASON WHY POWDER IS SPRINKLED ON THE CARROM BOARD
an object rests on a horizontal frictionless surface . A horizontal force of magnitude F is applied.This force produces an accleration:
A) only if F is larger than the weight of the object.
B) only while the object suddenly changes from rest to motion.
D) only if the inertia of the object decreases
why do we slip while stepping on a banana peel?
Is there any difference between friction and frictional force?
Why are the worn out tyres discarded?
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.
why do painters use sand paper before painting the doors??
What role does friction play in the sport of your choice?
imagine thet friction suddenly vanishes,how would life be affected.list ten such situation
Which of the following cannot be charged easily by friction?
a) A plastic scale b) A woollen cloth c) An inflated balloon d) A copper rod
on what principle do ball bearings work
Why is friction called a perverse force ?
kabaddi players rub thier hands with the soil before the game starts
can we reduce friction to zero by polishing surfaces or using large amount of lubricants?
why are grooves provided in the soles of shoes
Use the following information to answer the next question.
A box is placed on three different surfaces − a marble floor, a cardboard sheet, and a sand paper. The minimum forces required to simply move the box on the surfaces are Fm, Fc, and Fs respectively.
The three forces can be arranged in the decreasing order as
Fc < Fm < Fs
Fc < Fs < Fm
Fm < Fc < Fs
Fs < Fc < Fm
Why does the sportsmen use shoes with spikes?
while drawing a line on a paper,friction force acts on paper in the same direction along which line was drawn on the paper.
It says in the answer key that it is true.pls explain how
Give two examples where friction is (a) Useful (b) A nuisance.
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.
Why friction is a necessary evil?
what are rolling friction?
why are the bodies of birds streamlined
(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.
if you try to hold a glass with oil on your hands it tends to slip.why?
out of sliding friction.static friction and rolling friction
(a) which one is the smallest
(b) which one is the largest
WHY DO WE SLIP ON A MUDDY ROAD AND WHEN WE STEP ON A BANANA PEEL?
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