Intro to Circular motion

Which direction would the pink object go if the disc suddenly stopped turning?

• vector D

• vector C

• vector B

• vector A

Tags

NGSS.HS-PS2-1

Which color line represents the radius?

• black

• blue

• pink

• green

Which represents the centripetal force acting on the ball?

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

A force ____ to the motion causes the object to change its path from a straight line to a circle.

• perpendicular

• faster

• slower

• stronger

Tags

NGSS.HS-PS2-1

Centripetal acceleration acts in which direction?

• in a line tangent to the circle

• towards the center of the circle

• on the circumference

• outside the circle

At the point marked X in the diagram, what is the net force acting on the bucket causing it to move in a circle?

• F_c = F_net

• F_g + F_T = F_net

• F_T - F_g = F_net

Tags

NGSS.HS-PS2-1

In the diagram, a bucket of water is moving in a vertical circle. Which force is acting as a centripetal force on the bucket?

• friction

• normal

• tension

• gravity

In the diagram, a bucket of water is moving in a vertical circle. Which force is acting as a centripetal force on the water?

• friction

• normal

• tension

• gravity

A 0.2 kg ball rotates at a constant speed of 3 m/s on the end of 1.2 m long string. What is the centripetal force exerted on the object?

• 0.5 N

• 5 N

• 0.2 N

• 1.5 N

Tags

NGSS.HS-PS2-1

Calculate the centripetal acceleration required to make a 5 kg ball move at a velocity of 4 m/s in a circle with a radius of 2 m.

• 2 m/s

• 2 m/s²

• 8 m/s

• 8 m/s²