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प्रश्न
What do you mean by the gravitational force? Give an example to illustrate it.
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उत्तर
The force of attraction on a body by the Earth is called gravitational force.
Example: The leaves and fruits fall from a tree downwards towards the ground, water in a river flows down streams, a ball thrown up goes to a height, and then returns back on the ground are some examples of motion due to gravitational force
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संबंधित प्रश्न
Give two examples of situations in which you push to change the state of motion of objects.
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.
An athlete making a high jump to clear the bar at a certain height.
Fill in the blank.
On pulling a string, its .................. increases.
Name the term used for the push or pull?
State the effect produced by a force in the following case:
A man pushes a heavy cart
Fill in the blank.
Magnetic force is a ................ force.
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 horse continues to apply force in order to move a cart with a constant speed. Explain why?
