Advertisements
Advertisements
प्रश्न
Select the correct alternative.
Friction is increased if
पर्याय
an oil is sprayed
the surfaces are made wet
the surfaces are made dry
the surfaces are polished
Advertisements
उत्तर
the surfaces are made dry
APPEARS IN
संबंधित प्रश्न
In the following situations identify the agent exerting the force and the object on which it acts. State the effect of the force in case.
Squeezing a piece of lemon between the fingers to extract its juice.
In the following situation identify the agent exerting the force and the object on which it acts. State the effect of the force in case.
Taking out paste from a toothpaste tube.
Fill in the blank.
Force is applied as ........... or ..........
Select the correct alternative.
A body falls downwards because of
Give one example of force as a pull
State the effect produced by a force in the following case:
A man pushes a heavy cart
What do you mean by the gravitational force? Give an example to illustrate it.
Match the following.
| Column A | Column B |
| 1. Non-contact forces | a. perpendicular to surface |
| 2. Catapult | b. an act of push or pull |
| 3. Force | c. unit of force |
| 4. Normal force | d. action-at-a-distance forces |
| 5. Newton | e. contact force |
Give a reason for the following.
Brake handles of motorcycles are generally covered with a toweled cloth?
A goalkeeper in a game of football pulls his hands backwards after holding the ball shot at the goal. This enables the goalkeeper to
