Centripetal and Centrifugal Force

A hammer (or anything else) is thrown into the air and spins. Which of the observations is most correct.

• The rotation of the hammer is around the center of mass.

• The hammer rotates around the end of the handle.

• The center of the hammer head is the center of rotation.

• The center of gravity is the middle of the hammer.

To balance this seesaw

• the girl on the right should stand up.

• the boy on the left should stand up

• the girl on the right should move toward the boy.

• the boy on the left should move toward the girl

Tags

NGSS.3-PS2-1

The boys Center of Mass is

• straight up from his chin.

• straight down from his hands

• just above his shoulders

• slightly behind his elbows

The center of mass of the flask is

• directly above the salt

• closer to the mouth of the flask than the base

• at the base of the flask

• located in the same place as the center of gravity.

The Leaning Tower Of Pisa will not fall over until

• the left side of the top is passed the right side of the bottom.

• the center of mass and the center of gravity are located together.

• the center of gravity moves past the right side of the base.

• the center of gravity moves past the left side of the base.

Tags

NGSS.MS-PS2-4

When an object is in circular motion it is constantly changing its velocity.

• True
• False

You swing a bucket of water attached to a string in a circle above your head. What keeps the water in the bucket?

• Friction
• Centripetal Force
• Gravity
• Inertia

Tags

NGSS.MS-PS2-2

Which of the following terms means "center seeking"?

• centrifugal
• centrifuge
• centripetal
• centenarian