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प्रश्न
Tick the most appropriate answer
Friction always
पर्याय
supports motion
starts motion
encourages motion
opposes motion
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उत्तर
opposes motion
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संबंधित प्रश्न
Friction depends on the ______ of surfaces.
Give an example to illustrate the existence of the force of friction.
List three ways of reducing 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 detail.
What are the various effects of force? State one example of each.
Fill in the blank
Rolling friction is ............. than sliding friction.
Answer the following in short.
When you push something heavy, the resistance you feel decreases as soon as the object starts moving. Explain the reason.
Answer the following in short.
List the various states of matter that offer frictional force?
Whenever the surfaces in contact tend to move or move with respect to each other, the force of friction comes into play
We have two identical metal sheets. One of them is rubbed with sand paper and the other with ordinary paper. The one rubbed with sand paper shines more than the other. Give reason.
