The moment of force depends on which factors?

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  1. The speed of rotation
  2. Only the distance from the point of rotation
  3. Both force magnitude and perpendicular distance
  4. Only the magnitude of the force

Answer (Detailed Solution Below)

Option 3 : Both force magnitude and perpendicular distance
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Detailed Solution

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Explanation:

The moment of a force (also called torque) is a measure of the tendency of the force to rotate an object about a specific point or axis.

It is mathematically defined as:

Moment (M)=Force (F)×Perpendicular Distance (d)

Where:

  • Force (F) is the magnitude of the applied force.

  • Perpendicular Distance (d) is the shortest distance from the point of rotation to the line of action of the force.

 Additional InformationTypes of Moments:

  1. Clockwise Moment:

    • Causes rotation in the clockwise direction.

  2. Counter-clockwise Moment:

    • Causes rotation in the anti-clockwise direction.

Principle of Moments (Varignon’s Theorem):

  • States that if a number of forces act on a body, the total moment about any point is equal to the sum of the moments of the individual forces.

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