Moment of forces, IGCSE PHYSICS

What is the mathematical representation of moment of forces?

• M = F / d
• M = F × d
• M = F + d
• M = F - d

Which factor does the moment of a force depend on?

• Direction of the force and time
• Temperature and pressure
• Speed of the force and mass
• Magnitude of the force and perpendicular distance

What is the concept of moment of forces?

• The distance between two objects
• The force applied to an object
• The rotational effect of a force
• The speed of an object

What does the principle of moments allow us to calculate?

• Unknown forces or distances
• Acceleration and mass
• Time and velocity
• Energy and power

What is the direction of the moment of force determined by?

• Friction
• Gravity
• Right-hand rule
• Left-hand rule

What is the perpendicular distance from the point of rotation to the line of action of force called?

• Direction of the force
• Magnitude of the force
• Lever arm or moment arm
• Equilibrium

What is the principle of moments?

• The sum of clockwise moments is greater than the sum of counterclockwise moments
• The sum of clockwise moments is less than the sum of counterclockwise moments
• The sum of clockwise moments is equal to the sum of counterclockwise moments
• The sum of clockwise moments is not related to counterclockwise moments

What is the significance of moment of forces in physics and mechanical systems?

• It determines the color of an object
• It helps calculate the speed of an object
• It allows us to understand rotational motion and equilibrium
• It measures the temperature of an object

What is the unit of measurement for moment of forces?

• Kilograms (kg)
• Meters per second (m/s)
• Watts (W)
• Newton-meters (Nm) or Joules (J)

Which of the following is an example of an application of moment of forces?

• Throwing a ball
• Turning a doorknob
• Pushing a car uphill
• Using a hammer to drive a nail