Quiz on the Principle of Moments

What does the principle of moments state about a body in equilibrium?

• The sum of the clockwise moments is greater than the sum of the anticlockwise moments.

• The sum of the clockwise moments equals the sum of the anticlockwise moments.

• The forces acting on the body must be unbalanced.

• The body must be in motion.

What is a moment defined as?

• Mass multiplied by acceleration.

• Force divided by time.

• Force multiplied by the distance from the pivot.

• Weight divided by distance.

In the experiment described, what weight is used to balance the 300g mass?

• 100g

• 200g

• 400g

• 300g

How far is the 200g weight placed from the pivot in the experiment?

• 3 cm

• 6 cm

• 9 cm

• 12 cm

What is the weight force of the 200g mass in Newtons?

• 4 Newtons

• 2 Newtons

• 1 Newton

• 3 Newtons

What is the total clockwise moment calculated in the experiment?

• 12 Newton cm

• 6 Newton cm

• 18 Newton cm

• 24 Newton cm

What unit is typically used to express turning force?

• Newton meters

• Joules

• Pascals

• Kilograms

What does the term 'anticlockwise moments' refer to?

• Moments that are equal to zero.

• Moments that have no effect on rotation.

• Moments that cause rotation in a counterclockwise direction.

• Moments that cause rotation in a clockwise direction.

What is the mass of the object used in the experiment that weighs 3 Newtons?

• 200g

• 300g

• 400g

• 100g

What is the relationship between clockwise and anticlockwise moments when a body is balanced?

• They are unrelated.

• Anticlockwise moments are always greater.

• Clockwise moments are always greater.

• They are equal.