Moments Topic Quiz

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

• Pivot
• Lever
• Wedge

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

this cupboard is filled with boxes. will it topple over ?

• it will
• it will not
• it will if the weight remains inside the base

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What is the centre of mass ?

• it is a single point at which the object can balance.
• The mass is distributed equally around it.
• the centre of gravity of the object
• All of the above

The diagrams show four solid cones. The centre of mass of each cone is marked by a point labelled M.

Which cone is the most stable

• A

• B

• C

• D

Tags

NGSS.MS-PS2-4

• A

• B

• C

• D

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

The diagram shows a uniform, flat metal sheet hanging freely from a nail at point A. One of the labelled points is at the centre of mass of the metal sheet.

Which point is at the centre of mass?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-4

Which one is the measure of how much matter an object has?

• weight

• gravity

• mass

• volume

Where the center of mass of a circle lies?

• At its centre

• Anywhere on its radius

• Anywhere on its circumference

• Anywhere on its diameter