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Question
Write the expression for the moment of force about a given axis.
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Solution
Moment of force about a given axis = Force × perpendicular distance of force from the axis of rotation.
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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.
