Pivot Point

What do we use to calculate the size of a turning force (moment)?

• Work x Force

• distance from pivot / Force

• Force / distance from pivot

• Force x distance from pivot

The place where a lever pivots is called the _______.

• Pivot point

• Tissue

• Fulcrum

What is the anticlockwise moment acting on this crane?

• 80,000Nm

• 100,000Nm

• 120,000Nm

• 140,000Nm

What is the moment acting on the seesaw?

• 6Nm

• 15Nm

• 16N

• 4Nm

What is the moment produced by the 15 N?

• 15 Nm (clockwise)

• 150 Nm (anti - clockwise)

• 1.5 Nm (anti - clockwise)

• 0.15 Nm (clockwise)

Complete: Moment = ___ x distance from ___.

• pivot, force

• load, pivot

• force, pivot

• force, middle

A boy of weight 600N sits on the see-saw as shown at a distance of 1.5m from the pivot. What is the force F required at the other end to balance the see-saw?

• 450 N

• 350 N

• 4.5 N

• 200 N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What do we call forces applied to anything that turns?

• Minute

• Moment

• Minimum

• Monument

Tags

NGSS.MS-PS2-2

What is the size of the moment shown by the black arrow?

• 30 Nm

• 36 Nm

• 40 Nm

• 60 Nm

The diagram shows a gauge which measures the amount of liquid in a tank. At which position should the pivot be placed so that the pointer moves the greatest distance as the tank is emptied?

• A

• B

• C

• D

Tags

NGSS.MS-ETS1-1