Label the arrows to show which girl causes a clockwise turning force and which causes an anticlockwise turning force.

What is the equation for calculating moments?

Moment (Nm) = Force (N) x Distance from Pivot (m)

What is the law of moments?

That when the anticlockwise and clockwise moments are the same, the object is in equilibrium.

A turning force involves a force acting over a certain distance from a _____

A turning force involves a force acting over a certain distance from a ** pivot**.

What is the scientific name for a turning force?

A ** moment**.

Add the labels: pivot, distance and force to the correct spaces.

A balanced see-saw is said to be in…

equilibrium

What is the moment of the man on the right?

moment = force x distance from pivot

moment = 1000N x 0.5m

moment = 500 Nm

What is the momemnt of the girl on the left?

moment = force x distance from pivot

moment = 500N x 1m

moment = 500 Nm

What are the units of a moment (turning force)?

Newton metres (Nm)

or

Newton centimetres (Ncm)