1.3.2 Principle of Moments

• What is the lever arm in the context of moments?

  Perpendicular distance from pivot
• Understanding moments is crucial for analyzing situations such as levers.


  True
• A seesaw is balanced when the clockwise moments equal the anticlockwise moments.


  True
• If the lever arm is doubled to 4 m while the force remains 50 N, the resulting moment is 200 Nm.
• What is the formula to calculate the moment?

  Force x Lever Arm
• The mathematical expression for the Principle of Moments is: ∑ Clockwise Moments = ∑ Anticlockwise Moments.
• Clockwise moments tend to rotate an object clockwise.


  True
• Increasing the force applied to an object increases the moment proportionally.


  True
• If a force of 50 N is applied at a lever arm of 2 m, what is the moment?

  100 Nm
• In the formula for moment, the force is the strength of the push or pull applied.
• In equilibrium, an object experiences no net force or net moment.


  True
• The net moment in equilibrium must be equal to zero.
• The formula for calculating the moment is: Moment = Force × Lever Arm.
• The moment of a force is calculated by multiplying the force by the perpendicular distance
• The formula for calculating the moment is: Moment = Force x Lever Arm
• The Principle of Moments states that for an object to be in equilibrium, the total clockwise moments must equal the total anticlockwise moments.
• If a force of 50 N is applied with a lever arm of 2 m, the resulting moment is 100 Nm.
• If a force of 50 N is applied with a lever arm of 2 m, the moment is 100 Nm.
• Increasing the force increases the moment proportionally.


  True
• The Principle of Moments can be expressed mathematically as: \sum Clockwise Moments = \sum Anticlockwise Moments
• What is the lever arm in relation to a pivot and force?

  Perpendicular distance from pivot to force
• If the force is doubled while the lever arm remains the same, the moment doubles as well.


  True
• What does the perpendicular distance refer to in the moment formula?

  Distance from pivot to force
• Match the type of equilibrium with its description:

  Stable ↔️ Returns to original position after displacement

  Unstable ↔️ Moves away from original position

  Neutral ↔️ Stays in new location after displacement
• Why is a balanced seesaw considered in equilibrium?

  Moments are equal
• Match the type of moment with its description:

  Clockwise ↔️ Rotates object clockwise

  Anticlockwise ↔️ Rotates object anticlockwise
• Increasing the lever arm also increases the moment of the force.
• What happens to the moment if the force is doubled while the lever arm remains constant?

  It doubles
• What is the effect of increasing the lever arm on the moment?

  Increases the moment
• Equilibrium in physics means an object experiences no net force or net moment.


  True
• What is an example of an object in equilibrium when the moments on both sides are equal?

  Balanced seesaw
• The principle of moments states that the total clockwise moments must equal the total anticlockwise moments.
• A moment measures the tendency of a force to cause rotation.

  True
• What is the moment caused by child A at pivot A if the force is 300 N and the distance is 2 m?

  600 Nm
• Doubling the force while keeping the lever arm constant doubles the moment.

  True
• The lever arm is the perpendicular distance from the pivot to the line of action of the force.

  True
• The Principle of Moments states that for equilibrium, clockwise moments must equal anticlockwise moments.


  True
• What does the Principle of Moments state?

  Clockwise moments = anticlockwise moments
• What happens to a seesaw if child A applies a moment of 300 Nm clockwise and child B applies a moment of 300 Nm anticlockwise?

  The seesaw is in equilibrium
• Increasing the lever arm increases the moment