Methods to Change Friction
Trending Questions
Q. How does the use of ball bearings reduce friction?
Q. Why is talcum powder sprinkled on carrom board?
- To maintain friction
- To decrease friction
- To decrease friction to zero
- To increase friction
Q.
Why are automobile tyres provided with a rough surface?
Q. Which of the following can be used to reduce friction?
- Metal wires
- Ball bearings
- Sand paper
- Limestone
Q. Spikes provided under the shoes of the athletes are for
- increasing grip
- feeling lighter
- increasing weight
- reducing friction
Q. When a surface is made too much smooth, the friction on the surface
- vanishes
- increases
- decreases
- remains the same
Q.
State one way of increasing friction.
Q.
Which offers more friction on a body a glass surface or a wooden surface?
Q. Match the following events with the type of friction involved:
- Static friction
- Air drag
- Fluid friction
- Rolling friction
Q.
Why the wheel must be round in shape
Q. Gel based pens give a more smoother writing experience than non-gel/ball pens because it
- increases friction
- reduces friction
- increases adhesion
Q. Ball bearings help us to
reduce friction.
reduce friction.
- False
- True
Q. Which of the following methods results in an increase in friction?
- Application of lubricants
Application of powder on a carrom board
- Addition of spikes to soles of shoes
- Addition of wheels
Q. Which of the following cannot be used as a method to reduce friction?
- Polishing of surface
- Wetting paper before writting
- Using lubricants
- Sprinkling of talcom powder on carrom
Q. Water also offers friction to any body moving inside it.
- False
- True
Q. The friction that acts when there is no relative motion between two surfaces is known as
- static
- sliding
- kinetic
Q. The materials which help us to reduce friction :-
- Grease
- Graphite
- Machine Oil
- Soil
- Ball Bearings
- Cement
- Wheels
- Gels
Q. During adhesion, the bonds formed between the surfaces in contact are unbreakable chemical bonds.
- True
- False
