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प्रश्न
Answer the following.
What do you understand by a force?
उत्तर
Force is a push or pulls acting upon an object as a result of its interaction with another object.
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संबंधित प्रश्न
When a glass rod is rubbed with a piece of silk cloth the rod ______.
Name the three kinds of friction.
Give three examples to illustrate that friction is a necessary evil.
Define static friction
Answer the following in short.
Define force. Write its SI unit.
Fill in the blank.
More the roughness of a surface, greater is the ........................
Fill in the blank.
Bicycles use ...................... to reduce friction between the pedals and the crank
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 figure, a boy is shown pushing the box from right to left. The force of friction will act on the box
