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Centripetal Accelerations on a Turntable

Figure from experiment 20 from Physics with Vernier

Introduction

As a child, you may remember the challenge of spinning a playground merry-go-round so you could scare the unfortunate riders as they traveled around a circular path. You worked especially hard to push the merry-go-round to increase its angular velocity. As the angular velocity of the riders increased, so did their centripetal acceleration. The challenge for the riders was to compete with the centripetal acceleration to maintain their grip—and their stomachs. The faster the merry-go-round was spun, the more difficult it became to stay on the ride. It may have disappointed you when the riders cheated and moved toward the center of the merry-go-round to reduce the acceleration. In this activity, you will investigate centripetal acceleration on a turntable. You will use a Low-g Accelerometer or Wireless Dynamics Sensor System (WDSS) attached to the turntable to determine the relationship between centripetal acceleration, angular velocity, and the radius of the circular path.

Objectives

  • Measure centripetal acceleration on a record turntable.
  • Determine the relationship between centripetal acceleration, radius, and angular velocity.
  • Determine the direction of centripetal acceleration.

Sensors and Equipment

This experiment features the following Vernier sensors and equipment.

Additional Requirements

You may also need an interface and software for data collection. What do I need for data collection?

Standards Correlations

See all standards correlations for Physics with Vernier »

Experiment 20 from Physics with Vernier Lab Book

<i>Physics with Vernier</i> book cover

Included in the Lab Book

Vernier lab books include word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.

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