Physics
Match the following columns :
| Column A | Column B | ||
|---|---|---|---|
| (a) | Non contact force | (i) | repel |
| (b) | Like poles | (ii) | kg |
| (c) | Contact force | (iii) | Gravitational force |
| (d) | Mass | (iv) | wear and tear |
| (e) | Weight | (v) | force of friction |
| (f) | Friction | (vi) | kgf |
Force
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Answer
| Column A | Column B | ||
|---|---|---|---|
| (a) | Non contact force | (iii) | Gravitational force |
| (b) | Like poles | (i) | repel |
| (c) | Contact force | (v) | force of friction |
| (d) | Mass | (ii) | kg |
| (e) | Weight | (vi) | kgf |
| (f) | Friction | (iv) | wear and tear |
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Related Questions
Fill in the blanks :
(a) Force is applied as …………… or …………… .
(b) On squeezing a gum tube, its …………… changes.
(c) On pulling a string, its …………… increases.
(d) A moving football when kicked, its …………… changes.
(e) On applying brakes on a moving car, its speed …………… .
(f) We use ball bearings to …………… the friction.
(g) Friction …………… motion.
(h) Lubricants are used to …………… friction.
(i) Friction causes …………… of moving parts of a machine.
Write true or false for each statement :
(a) The frictional force acts in the direction of motion of body.
(b) The unit of weight is kilogram.
(c) A force can change the direction of motion of a moving body.
(d) A force increases the mass of the body when applied on it.
(e) The force of friction is always disadvantageous.
(f) The sliding friction is more than the rolling friction.
(g) Liquids offer more friction than the gases.
(h) A wet oily road offers more friction than a dry rough road.
Name the term used for the push or pull.
Give one example each of a force as
(i) a push,
(ii) a pull,
(iii) a stretch and
(iv) a squeeze.