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प्रश्न
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.
विकल्प
If both the assertion and the reason are true and the reason is the correct explanation of assertion.
If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
Assertion is true, but the reason is false.
Assertion is false, but the reason is true.
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उत्तर
If both the assertion and the reason are true, but the reason is not the correct explanation of the assertion.
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संबंधित प्रश्न
Define force.
Name of S.I. unit of the rate of change in momentum.
State the relationship between force, mass and acceleration. Draw graphs showing the relationship between Acceleration and force for a constant mass.
Define the moment of force.
The S.I. unit of moment of force is ______.
The diagram shows a uniform metre rule weighing 100gf, pivoted at its centre O. Two weights 150gf and 250gf hang from the point A and B respectively of the metre rule such that OA = 40 cm and OB = 20 cm. Calculate :
the total clockwise moment about O
State one factor on which the magnitude of a non-contact force depends. How does the magnitude of a non-contact force change along with distance?
A uniform metre rule rests horizontally on a knife-edge at the 60 cm mark when a mass of 10 gram is suspended from one end. At which end must this mass be suspended? What is the mass of the rule?
A couple of 15 N force acts on a rigid body, such that arm of couple is 85 cm. Calculate moment of couple in the SI system.
