Final answer:
The moment of a force can be greater if the force is bigger or acts further from the pivot. The greatest moment occurs when the force acts at a 90° angle to the object it acts on.
Step-by-step explanation:
(a) The moment of a force is bigger if the force is bigger.
(b) The moment of a force is bigger if it acts further from the pivot.
(c) The moment of a force is greatest if it acts at 90° to the object it acts on.
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