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प्रश्न
Dust particles are removed from a carpet by beating it.
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उत्तर
The part of the carpet where the stick strikes comes in motion at once, while the dust particles settled on it remain in the state of rest due to inertia of rest. Thus, a part of the carpet moves ahead with the stick leaving behind the dust particles that fall down due to gravity.
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संबंधित प्रश्न
Calculate the momentum of the following :
(a) an elephant of mass 2000 kg moving at 5 m/s
(b) a bullet of mass 0.02 kg moving at 400 m/s
The inertia of an object tends to cause an object :
The physical quantity which makes it easier to accelerate a small car than a large car is measured in the unit of :
The unit of measuring momentum of a moving body is :
Name the factor on which the inertia of a body depends and state how does it depend on the factor stated by you .
Why does a person fall when he jumps out from a moving train ?
Why does a coin, placed on a card, drop into the tumbler when the card is rapidly flicked with a finger?
Give two examples of inertia kinds.
A man of mass 100 kg has a weight of ______ at the surface of the Earth.
Assertion & Reasoning
- Assertion: The value of ‘g’ decreases as height and depth increase from the surface of the Earth.
- Reason: ‘g’ depends on the mass of the object and the Earth.
