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प्रश्न
Is there any possibility of making a special device to measure the magnitude of friction directly?
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उत्तर
Yes. Tribometer is a special device to measure the magnitude of friction directly.
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संबंधित प्रश्न
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?
State two factors which directly affect the force of friction.
Answer the following in detail.
What are the various effects of force? State one example of each.
Tick the most appropriate answer.
A car skids on a wet or muddy road due to
Fill in the blank.
Bicycles use ...................... to reduce friction between the pedals and the crank
State if the following statement is true or false. Correct the statement if it is false.
Friction is offered by all the three states of matter.
Rolling friction is slightly greater than sliding friction.
Match the following.
| Column I | Column II | |
| a) | Static friction | viscosity |
| b) | Kinetic friction | least friction |
| c) | Rolling friction | objects are in motion |
| d) | Friction between the liquid layers | objects are sliding |
| e) | Sliding friction | objects are at rest |
In the following figure, a boy is shown pushing the box from right to left. The force of friction will act on the box
Friction depends on the ______ of two surfaces in contact.
