Moment of a force basics

Steps:

• Recall moment = force × perpendicular distance from pivot to line of action.
• Identify statement 1: Correctly states moment depends on perpendicular distance.
• Identify statement 2: Correctly states direction follows right-hand rule.
• Identify statement 3: Incorrectly claims moment is always clockwise or anticlockwise without vector context.

Why A is correct:

• A selects 1 and 2, matching the definition where moment magnitude uses perpendicular distance and direction uses vector rules.

Why the others are wrong:

• B includes incorrect 3, ignoring vector nature of moments.
• C omits correct 1, missing key distance component.
• D selects only incorrect 3, neglecting valid statements.

Not enough information.

Final answer: A