Advertisements
Advertisements
Question
Fill in the blank.
Bicycles use ...................... to reduce friction between the pedals and the crank
Advertisements
Solution
Bicycles use ball bearings to reduce friction between the pedals and the crank.
APPEARS IN
RELATED QUESTIONS
What is the cause of friction?
Define sliding friction
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?
Answer the following in short.
What do you understand by normal force?
Fill in the blank.
Rolling friction offers ............. resistance than sliding friction.
Tick the most appropriate answer.
Friction is offered by
Tick the most appropriate answer.
Friction for an object can be reduced by
Tick the most appropriate answer.
Friction produces
Answer the following in detail.
Write the characteristics of the force of friction?
