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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 .
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 are the problems faced by people living in desert areas?
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 why sliding friction is less than static friction?
would you be able to suck juice with a drinking straw on the moon ?give reason?
write various techniques adopted by human beings to reduce energy losses due to friction
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?
Explain Friction as necessary evil?
Events that get repeated regularly like day and night, waxing and waning of the moon, helps us to measure:
a)time
b)mass
c)gracvity
d)distances
friction a necessary evil
IMAGINE THAT FRICTION SUDDENLY VANISHES. HOW WOULD LIFE BE AFFECTED. LIST TEN SUCH SITUATIONS
what difference will you hear in a sound if there is an increase in
a)amplitude of vibration
b) frequency of vibration
give three examples of increase and decrease friction.
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 ?
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??
Why do painter uses and paper in white washing the walls and in polishing doors?
What are the differences between sliding and rolling friction ? ...(atleast 3)
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? ________________________
_________
Explain why the sole of our shoe wear out.
What role does friction play in the sport of your choice?
why is 'static friction'called a self adjusting force?
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.
how 2 make webpages on pollution i jst need d HTML code plzz
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
how does friction helps us in walking?
Water comes out more slowly from upstairs tap than from a similar
tap downstairs.
explain why the handles of motor cyclenr covered with a rubber sheet with spikes????
why spaceships are provided with heat shields
Why is friction called a perverse force ?
Arrange in ascending order-
Rolling friction; Sliding friction; Static friction; Kinetic friction; Fluid friction
IS rolling friction more than sliding friction? true or false
what will happen if friction suddenly vanishes from our life
why is rolling friction less than sliding friction?
Why do we sprinkle fine powder on the carom board while playing?
can we reduce friction to zero by polishing surfaces or using large amount of lubricants?
mention three effects (consequences) of friction.
Rani wanted to plate an iron spoon with copper. She took copper sulphate as electrolyte. She connected the spoon with the positive terminal of the cell and the copper plate to the negative terminal. She closed the circuit and found no change. What went wrong? Explain.
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 ??
What is a streamlined body? How is it helpful for a body to have such a shape?
why do we slip while stepping on a banana peel?
Why are the worn out tyres discarded?
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.
why do painters use sand paper before painting the doors??
imagine thet friction suddenly vanishes,how would life be affected.list ten such situation
out of sliding friction.static friction and rolling friction
(a) which one is the smallest
(b) which one is the largest
name two solid lubricants and state where they are used
on what principle do ball bearings work
What is the difference between force and friction?
moving part of machine often need replacement?give reason
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?
'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 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?
why are the bodies of birds streamlined
Explain why
(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?
which of the following is/are minimum?
A.static friction
b.rolling friction
c.sliding friction
d.both {a} and {b}
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Syllabus
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 .
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 are the problems faced by people living in desert areas?
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 why sliding friction is less than static friction?
would you be able to suck juice with a drinking straw on the moon ?give reason?
write various techniques adopted by human beings to reduce energy losses due to friction
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?
Explain Friction as necessary evil?
Events that get repeated regularly like day and night, waxing and waning of the moon, helps us to measure:
a)time
b)mass
c)gracvity
d)distances
friction a necessary evil
A) 5m B) 5.5m C) 4.8m D) 5.2m
Pls give the explanation
IMAGINE THAT FRICTION SUDDENLY VANISHES. HOW WOULD LIFE BE AFFECTED. LIST TEN SUCH SITUATIONS
what difference will you hear in a sound if there is an increase in
a)amplitude of vibration
b) frequency of vibration
give three examples of increase and decrease friction.
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 ?
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??
Why do painter uses and paper in white washing the walls and in polishing doors?
What are the differences between sliding and rolling friction ? ...(atleast 3)
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? ________________________
_________
Explain why the sole of our shoe wear out.
What role does friction play in the sport of your choice?
why is 'static friction'called a self adjusting force?
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.
how 2 make webpages on pollution i jst need d HTML code plzz
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
how does friction helps us in walking?
Water comes out more slowly from upstairs tap than from a similar
tap downstairs.
explain why the handles of motor cyclenr covered with a rubber sheet with spikes????
why spaceships are provided with heat shields
Why is friction called a perverse force ?
Arrange in ascending order-
Rolling friction; Sliding friction; Static friction; Kinetic friction; Fluid friction
IS rolling friction more than sliding friction? true or false
what will happen if friction suddenly vanishes from our life
why is rolling friction less than sliding friction?
Why do we sprinkle fine powder on the carom board while playing?
can we reduce friction to zero by polishing surfaces or using large amount of lubricants?
mention three effects (consequences) of friction.
Rani wanted to plate an iron spoon with copper. She took copper sulphate as electrolyte. She connected the spoon with the positive terminal of the cell and the copper plate to the negative terminal. She closed the circuit and found no change. What went wrong? Explain.
A) carpet
B)glazed tiles
C) wood
D) door mat
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 ??
What is a streamlined body? How is it helpful for a body to have such a shape?
why do we slip while stepping on a banana peel?
Why are the worn out tyres discarded?
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.
why do painters use sand paper before painting the doors??
imagine thet friction suddenly vanishes,how would life be affected.list ten such situation
out of sliding friction.static friction and rolling friction
(a) which one is the smallest
(b) which one is the largest
name two solid lubricants and state where they are used
on what principle do ball bearings work
What is the difference between force and friction?
moving part of machine often need replacement?give reason
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?
'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 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?
why are the bodies of birds streamlined
Explain why
(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?
which of the following is/are minimum?
A.static friction
b.rolling friction
c.sliding friction
d.both {a} and {b}