3F - 3. Momentum and Equilibrium

What is the turning effect of a force called?

• Mass

• Weight

• Force

• Torque

How is the moment of a force calculated?

• moment = F + d

• moment = F / d

• moment = F ⨉ d

• moment = F - d

What must be equal for an object to be in equilibrium?

• Weight and distance

• Clockwise and anticlockwise moments

• Torque and force

• Force and mass

What is the centre of gravity also known as?

• Equilibrium point

• Torque point

• Point of balance

• Centre of mass

What happens to a box with a wider base when tilted?

• It falls over easily

• It is more stable

• It has no effect

• It becomes heavier

What type of equilibrium occurs when the centre of gravity stays over the base?

• Neutral equilibrium

• Unstable equilibrium

• Stable equilibrium

• Dynamic equilibrium

What is the principle of moments?

• The weight must be balanced

• The distance must be equal

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

• The sum of forces must be zero

What is the effect of increasing the length of a spanner?

• Decreases the moment

• Increases the moment

• Has no effect

• Changes the direction

What does a stable equilibrium mean?

• The object is always moving

• The object is balanced briefly

• The object falls over easily

• The object remains in its position

What is the result when the centre of gravity passes over the edge of the base?

• The object becomes stable

• The object tips over

• The object gains weight

• The object remains balanced