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Can anyone list 10 advantages and disadvantages of friction?
give 10 examples of friction in our daily life.
Why do painter uses and paper in white washing the walls and in polishing doors?
What are the methods of reducing friction? Explain .
why does rough surface have greater friction then smooth surface?
What role does friction play in the sport of your choice?
What are the problems faced by people living in desert areas?
explain why sliding friction is less than static 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!!!!
write various techniques adopted by human beings to reduce energy losses due to friction
Explain Friction as necessary evil?
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
friction a necessary evil
explain why the handles of motor cyclenr covered with a rubber sheet with spikes????
IMAGINE THAT FRICTION SUDDENLY VANISHES. HOW WOULD LIFE BE AFFECTED. LIST TEN SUCH SITUATIONS
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? ________________________
give three examples of increase and decrease friction.
Under what conditions rolling friction increases? Maximum 6 points............
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??
IS rolling friction more than sliding friction? true or false
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?
a ball moving on a horizontal surface stops after sometime without applying any force.why
how 2 make webpages on pollution i jst need d HTML code plzz
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 does friction helps us in walking?
Water comes out more slowly from upstairs tap than from a similar
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
why is rolling friction less than sliding friction?
'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 do we sprinkle fine powder on the carom board while playing?
mention three effects (consequences) of friction.
Why is friction called a perverse force ?
is friction a friend or foe?
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 five examples to show that friction is increased deliberately.
GIVE REASON WHY POWDER IS SPRINKLED ON THE CARROM BOARD
what is streamlining ??
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?
Why are the worn out tyres discarded?
can walking on a smooth surface or polished surface be easier???
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
on what principle do ball bearings work
why metal chains are wrapped on tyres when they run on icy roads ?
kabaddi players rub thier hands with the soil before the game starts
why are grooves provided in the soles of shoes
can we reduce friction to zero by polishing surfaces or using large amount of lubricants?
Why does the sportsmen use shoes with spikes?
how does friction acts when we are writing with a chalk in blackboard?
why do gymnasts apply a coarse substance to their hands
Give two examples where friction is (a) Useful (b) A nuisance.
Friction arises due to the interlocking of depressions and__________present in a body.pls fill in the blank.
Why friction is a necessary evil?
When a pencil cell is released from a certain point on an inclined wooden board, it travels
why are the bodies of birds streamlined
Pls explain this:
To hold a glass of water, friction is necessary. Due to friction present between our fingers and the outer surface of the glass, we are able to grip the glass of water. If there was no friction present, it would not be possible to hold it.
(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?
WHY DO WE SLIP ON A MUDDY ROAD AND WHEN WE STEP ON A BANANA PEEL?
why do brake pads of bicycles have to replaced quite often
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