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प्रश्न
Answer the following in detail.
Describe three different ways by which friction can be increased to help us in various situations?
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उत्तर
Ways by which friction can be increased are :
- Tires of all vehicles have grooved designs or treads to make their surface rough. The roughness of a surface increases friction and prevents a vehicle from slipping or skidding on a wet or muddy road.
- Spikes in the shoe soles used by players and athletes increase friction and they get a firm grip on the ground. The soles of footwear are also provided with grooved designs to increase friction and avoid slipping.
- The handles of motorbikes are covered with spiked rubber to provide a good grip and have better control in holding the handles.
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संबंधित प्रश्न
Fill in the blank.
We use ball bearings to .................. the friction.
The eraser gets smaller and smaller as you use it more and more. Explain the reason.
Arrange the following in descending order:
- static friction
- sliding friction and
- rolling friction?
Fill in the blank.
The force of friction acting between two bodies in contact while at rest is known as ................ friction.
Tick the most appropriate answer.
A car skids on a wet or muddy road due to
Fill in the blank.
Rolling friction is ........... than sliding friction.
Answer the following in short.
How can sliding friction be changed into rolling friction easily?
Answer the following in detail.
Write the characteristics of the force of friction?
Explain how friction can be minimized.
Friction depends on the ______ of two surfaces in contact.
