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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
Give examples to show that friction is both a friend and a foe.
State two factors which directly affect the force of friction.
Name the three kinds of friction.
List three ways of reducing friction.
Define rolling friction
Fill in the blank.
Weight remaining the same, friction is independent of ............. of surface in contact.
Tick the most appropriate answer.
If you pour some oil onto a floor, the friction would
Fill in the blank
Rolling friction is ............. than sliding friction.
Is there any possibility of making a special device to measure the magnitude of friction directly?
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.
