Friction Extra questions

In this page we have Friction Important questions . Hope you like them and do not forget to like , social share and comment at the end of the page.

Short answer type questions:

Question 1.
(i)What is limiting friction?
(ii)What is dynamic friction?
(iii)What is sliding friction?
(iv)What is rolling friction?
(v)What is fluid friction?

Short answer type questions/HOTS:

Question 2.
Raman performs an experiment in which he first slides a wooden log (100 kg) and then slides a wooden box (100 kg). He observed that he needs to put some extra energy while pushing the wooden box. Why?

Question 3.
What factors effects the fluid friction?

Question 4.
Why submarines have streamlined body?

Question 5.
Why do we use ball bearings in the tyres?

Question 6.
How do we change rough surfaces into smooth surfaces?

Question 7.
Why do weightlifters use powder before lifting the weight?

Question 8.
How does matchstick lights up?

Question 9.
How do we walk on the road while walking on the grass less soil makes us fall?

Long answer type questions:
Question 10.
With the help of an experiment, explain the effect of rolling friction is less than sliding friction.

Question 11.
Discuss the advantages and disadvantages of friction.

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