Centripetal Force Review

A wheel has a diameter of .6096 m. At a certain speed, the wheel completes one full revolution in .86 s. Calculate the speed of the wheel at the edge.

• 2.23 m/s

• 2.50 m/s

• 16.26 m/s

• 3.00 m/s

Tags

NGSS.MS-PS3-1

A torus spins in order to generate artificial gravity. The radius of the torus is approximately (r = 14m). If one full revolution takes 1092 seconds, determine the centripetal acceleration of the torus.

• 0.0004 m/s²

• 0.001 m/s²

• 0.01 m/s²

• 0.1 m/s²

Tags

NGSS.HS-PS2-1

The difference between an inertial frame of reference and a non-inertial frame of reference is:

• An inertial frame is at rest or moves with constant velocity, while a non-inertial frame is accelerating.

• An inertial frame is accelerating, while a non-inertial frame is at rest or moves with constant velocity.

• Both frames are accelerating.

• Both frames are at rest.

A person can feel the centrifugal force when they are in a situation where they are moving in a circular path. Which of the following is an example of such a situation?

• Riding a merry-go-round

• Standing still

• Walking in a straight line

• Sitting on a bench

Tags

NGSS.HS-PS2-1

The point of a banked curve is to:

• reduce friction between the tires and the road

• allow vehicles to maintain speed without skidding

• increase the aesthetic appeal of the road

• provide a challenge for drivers

Tags

NGSS.HS-PS2-1

What rotational speed would you need in a training centrifuge to achieve 4.5g's if the radius of the arm is 45.4m?

• 9.8m/s

• 44.7m/s

• 46.7m/s

• 4.5m/s

Tags

NGSS.HS-PS2-1

Why do objects experience centripetal acceleration even though they can have a constant speed?

• Because they are speeding up as they move in a circle

• Because they are constantly changing direction and hence, velocity changes, and that net change is directed inward.

• Because they are constantly changing both speed and direction

• Because when you have 100 people pedaling, you can speed up more easily.

Which represents the acceleration of the ball?

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1

Abigail is riding her bicycle at a speed of 2.3 m/s around a circular track with a diameter of 0.6 m. What is her centripetal acceleration?

• 5 m/s²

• 17.63 m/s²

• 10 m/s²

• 8.81 m/s²

Centripetal acceleration always points

• in the direction of the object's motion
• in the opposite direction of the object's motion
• towards the center of the circle
• towards the outside of the circle