P2 Levers and Moments Flashcards
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.
What is the scientific name for a turning force?
A moment.
Add the labels: pivot, distance and force (effort) 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)
A force of 100N is applied to a see-saw, 0.5m from the pivot. At what distance from the pivot should a force of 25N be applied to balance the see-saw?
2m
