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Can anyone list 10 advantages and disadvantages of friction?
give 10 examples of friction in our daily life.
why does rough surface have greater friction then smooth surface?
What are the methods of reducing friction? Explain .
why do gymnasts apply a coarse substance to their hands
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?
Arrange in ascending order-
Rolling friction; Sliding friction; Static friction; Kinetic friction; Fluid friction
write various techniques adopted by human beings to reduce energy losses due to friction
What role does friction play in the sport of your choice?
Explain Friction as necessary evil?
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!!!!
friction a necessary evil
IMAGINE THAT FRICTION SUDDENLY VANISHES. HOW WOULD LIFE BE AFFECTED. LIST TEN SUCH SITUATIONS
Water comes out more slowly from upstairs tap than from a similar
give three examples of increase and decrease friction.
Is there any difference between friction and frictional force?
WHAT ARE THE CHEMICALS PRESENT IN MATCHSTICK?
give example to show that friction is both a friend and a foe?
can we reduce friction to zero by polishing surfaces or using large amount of lubricants?
Why is rolling friction less than sliding friction??
What are the differences between sliding and rolling friction ? ...(atleast 3)
on what principle do ball bearings work
Explain why the sole of our shoe wear out.
why is 'static friction'called a self adjusting force?
how 2 make webpages on pollution i jst need d HTML code plzz
would you be able to suck juice with a drinking straw on the moon ?give reason?
how does friction helps us in walking?
IS rolling friction more than sliding friction? true or false
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
why spaceships are provided with heat shields
What is a streamlined body? How is it helpful for a body to have such a shape?
what will happen if friction suddenly vanishes from our life
Albert plays football. His sister Juliana plays volleyball. While walking home from practice one day, Albert and Juliana argue about which is bigger, a football or volleyball.
How would you measure and compare the sizes of the two balls? ________________________
why is rolling friction less than sliding friction?
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.
Why do we sprinkle fine powder on the carom board while playing?
mention three effects (consequences) of friction.
is friction a friend or foe?
60g of ice at 0°C is added to 20g of water at 40°. The final temperature attained by the mixture is (given
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
what is streamlining ??
Why soels of shoes and tyres of vehicles are treaded?
why do we slip while stepping on a banana peel?
explain why the handles of motor cyclenr covered with a rubber sheet with spikes????
Why are the worn out tyres discarded?
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 do painters use sand paper before painting the doors??
What is the difference between force and friction?
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
Why is friction called a perverse force ?
kabaddi players rub thier hands with the soil before the game starts
how does friction acts when we are writing with a chalk in blackboard?
why are grooves provided in the soles of shoes
Why does the sportsmen use shoes with spikes?
what difference will you hear in a sound if there is an increase in
a)amplitude of vibration
b) frequency of vibration
Give two examples where friction is (a) Useful (b) A nuisance.
Why friction is a necessary evil?
why are the bodies of birds streamlined
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
(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?
how and where is frictional force active when someone is drawing water from a well?
WHY DO WE SLIP ON A MUDDY ROAD AND WHEN WE STEP ON A BANANA PEEL?
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