Physics
Assertion (A): When a beam is in static equilibrium, the sum of clockwise moments is equal to the sum of anticlockwise moments.
Reason (R): According to the principle of moments for a body in equilibrium, the sum of moments acting in one direction must be equal to the sum of moments in opposite direction.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true and R is not the correct explanation of A.
- assertion is false but reason is true.
- assertion is true but reason is false.
Force
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Answer
Both A and R are true and R is the correct explanation of A.
Explanation
Assertion (A) is true because when the sum of the clockwise moments acting on the beam is equal to the sum of the anticlockwise moments, their resultant sum is zero and the beam has no rotational motion. Hence, it is in static equilibrium.
Reason (R) is true because it provides a logical explanation for Assertion (A), stating the principle of moments for a body in equilibrium, which aligns with the definition of static equilibrium.
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