Advertisements
Advertisements
Question
Answer the following in detail.
Describe three different ways by which friction can be increased to help us in various situations?
Solution
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.
APPEARS IN
RELATED QUESTIONS
Iqbal has to push a lighter box and Seema has to push a similar heavier box on the same floor. Who will have to apply a larger force and why?
A charged glass rod attracts a charged plastic straw.
Define rolling friction
Answer the following in a word or two or in a sentence.
Why does a rolling ball stop after moving some distance?
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.
If you pour some oil onto a floor, the friction would
Fill in the blank.
Smoother the surface, ................. is the frictional force offered by it.
Answer the following in a word or two or in a sentence.
Why is difficult for a pen to leave a mark on a highly smooth plastic sheet?
In figure, a boy is shown pushing the box from right to left. The force of friction will act on the box