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प्रश्न
Sleepers are used below the rails.
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उत्तर
Sleepers are laid below the rails to reduce pressure (force/area) on the ground.
∴ Sleepers increase the area.
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संबंधित प्रश्न
An effort is applied on the bigger wheel of a gear having 32 teeth. It is used to turn a wheel of 8 teeth. Where it is used.
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- Name the forces producing
(a) Clockwise
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Assertion & Reasoning
- Assertion: The sum of the clockwise moments is equal to the sum of the anticlockwise moments.
- Reason: The principle of conservation of momentum is valid if the external force on the system is zero.
