Attention: Safety Recall of Vernier Go Direct Charge Station. Click to learn more.



Gravitation on Earth

Experiment #3 from Physics Explorations and Projects

Education Level
High School


The goal of this activity is for students to determine that objects in free fall on Earth experience an acceleration of 9.8 m/s2 and that the force of gravity acts on all objects on Earth at a ratio of 9.8 N of force for every kilogram of mass.

In the Preliminary Observations, students observe falling objects and hold and/or lift similarly-shaped objects of different mass.

During their investigations, students should determine that objects without appreciable air resistance fall at 9.8 m/s2 regardless of mass and that for every kilogram of mass, gravity pulls with an additional 9.8 N of force.

You may choose to have half the lab groups perform one investigation and half perform the other investigation, or choose to have all groups do both parts.


  • Identify variables, design and perform investigations, collect and analyze data, draw a conclusion.
  • Relate acceleration of gravity on Earth (g) and gravitational field strength on earth.

Sensors and Equipment

This experiment features the following sensors and equipment. Additional equipment may be required.

Ready to Experiment?

Ask an Expert

Get answers to your questions about how to teach this experiment with our support team.

Purchase the Lab Book

This experiment is #3 of Physics Explorations and Projects. The experiment in the book includes student instructions as well as instructor information for set up, helpful hints, and sample graphs and data.

Learn More