Angular Kinematics & Uniform Circular Motion

The "centrifugal force" describes what actual physics phenomena?

• Mass

• Weight

• Rotational Motion

• Inertia

What does the term "centripetal" mean?

• Center-fleeing

• Center-seeking

• Rotation

• Circular

Centripetal force isn't a new force, but an existing force. What other 2 forces in the choices below can the centripetal force be?

• Weight

• Friction

• Tension

• Air Resistance

• Normal

Why do clothes in a washing machine fling outward along the edge of the drum?

• Centripetal force isn't enough to pull them into the center of the drum, so the clothes are flung outward toward the edge of the drum due to inertia

• Gravity pulls the clothes to the outside of the drum

• Centripetal force is enough to pull them into the center of the drum, pushing them outward toward the edge of the drum

• The weight of the clothes is greater because they are weight, so the clothes are pulled toward the center

Tags

NGSS.HS-PS2-1

When driving around a curve, why do you lean the opposite direction of a turn?

• Gravity

• Weight

• Inertia

• Friction

What does the term "tangential" mean?

• Moving Forward

• Moving in a Circle

• Moving in a straight line

• Moving Around

In uniform circular motion, there is a

• Constant Speed

• Constant Angular Velocity

• Zero Acceleration

• Net Tangential Acceleration

If the centripetal force on a particle in uniform circular motion is decreased,

• The tangential speed remains constant

• The tangential speed will increase

• The radius of the circular path will decrease

• The tangential speed will decrease and/or the radius will increase

The angular acceleration in circular motion

• Equal in magnitude to the tangential acceleration divided by the radius

• Increases the angular velocity in the same direction

• All of the above

Is there an example when a car can experience centripetal and angular acceleration?

• No; both accelerations cannot act at the same time

• Yes; when the car is moving in a straight line

• No; the car only experiences centripetal acceleration around a curve

• Yes; when a car is changing its speed around a curve