Moments and Levers

1. A _________is a simple machine with a fulcrum and a rigid bar.

• Pivot
• Lever
• Wedge

3. Which type of lever is this?

• First Class Lever
• Second Class Lever
• Third Class Lever

2. The place where a lever pivots is called the _______.

• Pivot point
• Tissue
• Fulcrum

How many types of levers are there?

• 1
• 2
• 3
• 4

A see saw is an example of a:

• 1st class lever
• 2nd class lever
• 3rd class lever

What is the anticlockwise moment acting on this crane?

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

Tags

NGSS.HS-PS2-1

Unit of force.

• Meter
• Centimeter
• Newton

What is the moment acting on the seesaw?

• 1.6Nm
• 15Nm
• 16N
• 4Nm

Tags

NGSS.HS-PS2-1

Moment is bigger if the force acts further  from turning point

• TRUE
• FALSE

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)