End of Topic Test - Moments & Centre of Mass

Test yourself on End of Topic Test - Moments & Centre of Mass

• What is the equation for a moment?

• Which of these properties does not apply to couples?

• Which quantity is denoted by the symbol $d$ in the equation for the moment of a couple?

• Consider a child sat alone on the right hand side of a seesaw. What kind of force on the opposite seat of the seesaw will keep it horizontal and at rest?
  The weight of the child is 200 N, and the seats are spaced 0.5 m apart.

• Another child with weight 250 N comes and sits on the left seat of the seesaw.
  What is the resultant moment about the pivot?