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Can anyone list 10 advantages and disadvantages of friction?
give 10 examples of friction in our daily life.
What are the methods of reducing friction? Explain .
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 does rough surface have greater friction then smooth surface?
What are the problems faced by people living in desert areas?
Why do painter uses and paper in white washing the walls and in polishing doors?
explain why sliding friction is less than static friction?
write various techniques adopted by human beings to reduce energy losses due to friction
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
Explain Friction as necessary evil?
a ball moving on a horizontal surface stops after sometime without applying any force.why
friction a necessary evil
Why is friction called a perverse force ?
IMAGINE THAT FRICTION SUDDENLY VANISHES. HOW WOULD LIFE BE AFFECTED. LIST TEN SUCH SITUATIONS
Give five examples to show that friction is increased deliberately.
give three examples of increase and decrease friction.
What role does friction play in the sport of your choice?
WHAT ARE THE CHEMICALS PRESENT IN MATCHSTICK?
give example to show that friction is both a friend and a foe?
would you be able to suck juice with a drinking straw on the moon ?give reason?
Why is rolling friction less than sliding friction??
Under what conditions rolling friction increases? Maximum 6 points............
What are the differences between sliding and rolling friction ? ...(atleast 3)
Arrange in ascending order-
Rolling friction; Sliding friction; Static friction; Kinetic friction; Fluid friction
Explain why the sole of our shoe wear out.
What is a streamlined body? How is it helpful for a body to have such a shape?
why is 'static friction'called a self adjusting force?
how 2 make webpages on pollution i jst need d HTML code plzz
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? ________________________
how does friction helps us in walking?
IS rolling friction more than sliding friction? true or false
Water comes out more slowly from upstairs tap than from a similar
What is the difference between force and friction?
why spaceships are provided with heat shields
what will happen if friction suddenly vanishes from our life
a glass -top table is very smooth , but even then a rolling ball stops after some time . why ?
why is rolling friction less than sliding friction?
Why do we sprinkle fine powder on the carom board while playing?
mention three effects (consequences) of friction.
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 REASON WHY POWDER IS SPRINKLED ON THE CARROM BOARD
what is streamlining ??
why do we slip while stepping on a banana peel?
Blocks X and Y are attached to each other by a light rope and can slide along a horizontal, rough surfce. Block X gas a mass of 10kg and block Y a mass of 5kg. An applied force of 36N (right side) acts on block X. Suppose the magnitude of the force of friction on blocks X and Y and 8N and 4N respectively. The magnitude of tension in the string between the blocks is _______.
Why are the worn out tyres discarded?
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 painters use sand paper before painting the doors??
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?
what difference will you hear in a sound if there is an increase in
a)amplitude of vibration
b) frequency of vibration
imagine thet friction suddenly vanishes,how would life be affected.list ten such situation
why is it not advisable to use oil as a lubricant in some machines ?
explain why the handles of motor cyclenr covered with a rubber sheet with spikes????
How is a nail fixed in the wall due to friction?
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
Why does the sportsmen use shoes with spikes?
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 do gymnasts apply a coarse substance to their hands
Give two examples where friction is (a) Useful (b) A nuisance.
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
(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?
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