ROTATIONAL MOTION

In a seesaw, if one child moves closer to the fulcrum, what happens to their moment?

• It increases
• It remains the same
• It becomes zero
• It decreases

What is the main reason a couple produces rotation?

• Forces are unequal
• Forces act at the same point
• Forces are perpendicular
• Forces are equal, opposite, and not collinear

If a lever has a mechanical advantage of 1, what can be inferred about the arms?

• Effort arm is longer
• Load arm is longer
• Effort is zero
• Effort arm equals load arm

What is the unit of moment of a couple?

• Joule
• Watt
• Newton
• Newton-meter

In the derivation of couple moment, what is the significance of origin independence?

• It makes the force zero
• It changes the direction
• It reduces the magnitude
• The moment is the same regardless of reference point