Question
Explain the types of friction with examples.
✓
Answer
The three types of friction are:
$i.$ Static Friction: It is the friction acting on a body when the body is at rest or has not started moving yet and is variable in nature and is always equal to the amount of force exerted by the person on it. It has the maximum value of them all example: A man pushing a heavy block on a rough surface but still the motion of block has not started.
$i.$ Static Friction: It is the friction acting on a body when the body is at rest or has not started moving yet and is variable in nature and is always equal to the amount of force exerted by the person on it. It has the maximum value of them all example: A man pushing a heavy block on a rough surface but still the motion of block has not started.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
If the materials used for constructing a building were good conductors, do you think lightning will strike the building?
(i) Name the tool used with a tractor for sowing seeds in a field .
(ii) What are the advantages of using this tool ?
(ii) What are the advantages of using this tool ?
Name the two types of reflection of light. Which type of reflection makes us see an object from all directions?
Imagine Earth’s magnetic field suddenly disappeared. What kinds of problems could arise for life on Earth? Explain.
Name the cells on the retina of an eye:
$a.$ Which are sensitive to bright light.
$b.$ Which are sensitive to dim light.
$c.$ Which produce sensation of colour.
→$a.$ Which are sensitive to bright light.
$b.$ Which are sensitive to dim light.
$c.$ Which produce sensation of colour.
What is meant by endangered species? Name any two endangered animals?
What will happen if the natural habitat of a wild animal is destroyed?
Describe the functioning of the periscope. Also, tell that how many mirrors are there in a periscope.
Anjali's grandfather was talking to her about the quality of sound produced by different musical Instruments. The instruments like sitar, harmonium, flute, etc., give us a pleasant sensation of hearing. The dholak on the other side creates a noise.
(i) Mention the name of the vibrating part of sitar.
(ii) Briefly explain how the loudness is created by dholak?
(ili) We hear a shrilling sound by flute. Explain why?
(iv) Mention the values displayed by Anjali's grandfather.
(i) Mention the name of the vibrating part of sitar.
(ii) Briefly explain how the loudness is created by dholak?
(ili) We hear a shrilling sound by flute. Explain why?
(iv) Mention the values displayed by Anjali's grandfather.
What depletes the ozone layer in the atmosphere? What are the harmful effects of the depletion of ozone layer on us?