Test Friction
Trending Questions
Which of the following correctly describes friction?
Force that resists the motion of surfaces
Force that resists the relative motion of surfaces
Force that is magnetic in nature
Force that is always in the direction of motion
Self adjusting force
Rubbing of hands is what type of friction?
What is the 'drag' in fluids? [2 MARKS]
A) drag
B) sliding friction
C) rolling friction
D) none of these
What are all the forces acting on a sprinter while running? [2 MARKS]
The humans can float on water but not walk. Why?
The figure shows two boys applying force on a box. If the magnitude of the force applied by each is equal, will the box experience any force of friction?
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/22670/content_a5.png)
- True
- False
Where do we apply a force while walking?
Arrange the magnitudes of the following in ascending order : Rolling friction, Sliding friction, Static friction.
Also explain why is that? [3 MARKS]
The handle of a cricket bat or a badminton racquet is usually rough. Explain the reason.
Which of the following statements is incorrect?
(a) Friction acts on a ball rolling along the ground.
(b) Friction acts on a boat moving on water.
(c) Friction acts on a bicycle moving on a smooth road.
(d) Friction does not act on a ball moving through air.
Explain why the surface of mortar and pestle (silbatta) used for grinding is etched again after prolonged use?
While playing tug of war, Preeti felt that the rope was slipping through her hands. Suggest a way out for her to prevent this.
![](https://s3-us-west-2.amazonaws.com/infinitestudent-images/ckeditor_assets/pictures/22675/content_a6.png)
You might have noticed that when used for a long time, slippers with rubber soles become slippery. Explain the reason.
If we apply oil on door hinges, the friction will
(a) increase
(b) decrease
(c) disappear altogether
(d) will remain unchanged
Why doesn't friction act on the rocket when it is launched immediately ?
Question 4 (a)
An archer stretches her bow while taking aim at the target. She then releases the arrow, which begins to move towards the target. Based on this information fill up the gaps in the following statements using the following terms:
muscular, contact, non-contact, gravity, friction, shape, attraction
(a) To stretch the bow, the archer applies a force that causes a change in its
- Put in mould
- Red hot iron
- Solidifies
- Viscous iron
- Iron melts
What is static friction? Explain with the help of an example?
The spikes in the soles of the shoes of athletes, increase friction
- True
- False
The handle of a cricket bat or a badminton racquet is usually rough. Explain the reason.
Why does static friction require highest amount of force compared to rolling or sliding friction