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प्रश्न
In a door, handle is provided ......... from the hinges.
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उत्तर
In a door, handle is provided farthest from the hinges.
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संबंधित प्रश्न
A brass ball is hanging from a stiff cotton thread. Draw a neat labeled diagram showing the forces acting on the brass ball and cotton thread
How does the magnitude of this non-contact force on the two bodies depend on the distance of separation between them?
What is the SI unit of the moment of force?
A rocket is moving at a constant speed in space by burning its fuel and ejecting out the burnt gases through a nozzle. Answer the following
1) Is there any change in the momentum of the rocket? if yes, what causes the change in momentum?
2) Is there any force acting on the rocket? if yes, how much?
Classify the following amongst contact and non-contact forces.
Frictional force
Define the moment of force.
Write the expression for the moment of force about a given axis.
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.
