Advertisements
Advertisements
Question
Tick the most appropriate answer.
A car skids on a wet or muddy road due to
Options
increased friction between the road and the tires.
lubrication of brakes on a wet road.
reduced friction between the road and the tires.
streamlined shape of the car
Advertisements
Solution
reduced friction between the road and the tires.
APPEARS IN
RELATED QUESTIONS
Give examples to show that friction is both a friend and a foe.
Write true or false.
Liquids offer more friction than the gases.
A body needs a force F1 just to start moving on a surface, a force F2 to continue its motion and a force F3 to roll on the surface. What is
- the static friction
- sliding friction and
- rolling friction? State whether F2 is equal, less than or greater than (1) F1 and (2) F3.
Answer the following in a word or two or in a sentence.
Which type of force acts on a string pulled from both ends?
Fill in the blank
Rolling friction is ............. than sliding friction.
Fill in the blank.
Friction is a type of .................
Fill in the blank.
Bicycles use ...................... to reduce friction between the pedals and the crank
Answer the following in short.
Define rolling friction and give an example where rolling. friction comes into play.
Rolling friction is slightly greater than sliding friction.
Explain how friction can be minimized.
