Center of Mass

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

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

• stop watch

• plumbline

• pendulum

• gauge

What is one way you might increase the stability of an object?

• Lower the center of gravity

• Raise the center of gravity

• Increase the height of the object

• Shorten the base of the object

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

The adjacent hoop has a diameter of 1 meter, what are the coordinates of its centre of mass

• 1,1
• 0.5,1
• 0.5,0.5
• 1,0.5

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

• more
• less
• equal
• None of the above

Tags

NGSS.HS-PS2-1

where is the centre of mass of this image

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

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

Which is the most likely location of the  paintbrush's center of mass?

• Location 1
• Location 2
• Location 3
• Location 4

Tags

NGSS.HS-PS2-1

A figure skating pair is moving together at 10 m/s. One is thrown forward at 15 m/s. The speed of the center of mass after the throw is _____? (ignore friction)

• greater than 10 m/s

• 10 m/s

• less than 10 m/s

• depends on the masses of the two skaters

Tags

NGSS.HS-PS2-2

If m1 = 3 kg, m2 = 4 kg and m3 = 2 kg, find the center of mass of the system as an ordered pair (x, y). Type in your answer using sigfigs but without units and turn in your work.

(a)