Center of Mass & Moments 1

why is the car on the left unstable?

• Its centre of mass is high
• it has a narrow base
• it has a high height
• all of the above

why is the car on the right more stable?

• Its centre of mass is higher
• it has a wider base
• it has more height
• all of the above

the mass of the right side is ------ compared to the left side.

• more
• less
• equal
• None of the above

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

where is the centre of mass of this image

• at 20 mark
• at 42.5 mark
• at 50 mark
• at 100 mark

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

• weight

• gravity

• mass

• volume

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

Where will be the centre of mass of a uniform rod lies ?

• At its end

• At its middle point

• At its centre of its cross sectional area

• Depends upon its material

Where the center of mass of a circle lies?

• At its centre

• Anywhere on its radius

• Anywhere on its circumference

• Anywhere on its diameter

A simple method to find centre of mass of a body is usage of

• stop watch

• plumbline

• pendulum

• gauge