Moment and lever

Unit of force.

• Meter
• Centimeter
• Newton

There are two types of moments which are clockwise and anticlockwise moments

• True

• False

A seesaw is unbalanced with two people of different masses sitting equal distances from the center. Which of the following will result in equilibrium?

• The larger person moving further away from the center.
• Moving the smaller person closer to the center.
• Moving the smaller person further from the center.
• Making the larger person do nothing.

What are the units for a moment?

• N

• m

• Nm

• N/m

What is the moment for this situation?

• 5Nm

• 6Nm

• 50Nm

• 25Nm

What is the moment for this situation?

• 25Nm

• 2.5Nm

• 5Nm

• 0.25Nm

Find moment at A

• 24 kNm

• 240000 Nm

• 16 kNm

• 29000 Nm

What is the principle of moments?

• For a balanced object

  Clockwise moment = Anticlockwise moment

• I don't know, something physicsy I guess...

• For a balanced object the clockwise moments are larger

• All moments add up to 180

Is this balanced?

• Yes

• No

What is the anticlockwise moment acting on this crane?

• 80,000Nm
• 100,000Nm
• 120,000Nm
• 140,000Nm