Education Technology

# Activities

• ##### Subject Area

• Math: Algebra II: Trigonometric Functions

9-12

60 Minutes

• ##### Device
• TI-73 Explorer™
• TI-83 Plus Family
• TI-84 Plus
• TI-84 Plus Silver Edition

TI Connect™

• ##### Accessories

CBL™/CBL 2™
Sensor - Dual Range Force
Sensor - Motion Detector
TI Connectivity Cable
Vernier LabPro®

• ##### Other Materials
This is Activity 8 from the EXPLORATIONS Book: Real-World Math Made Easy.

The following materials are required for this activity :
• Ring stand
• Standard mass hanger

## Spring Thing: Newton's Second Law

#### Activity Overview

In this activity, students' use a force sensor and a motion detector to collect force and acceleration data for an object moving up and down hanging from a spring. They use the data to test Newton's second law, and to estimate the mass of an object.

#### Before the Activity

• Connect the force sensor to Channel 1 on the CBL 2™ or Vernier LabPro®
• Connect the motion detector to the DIG/SONIC port of the CBL 2 or the DIG/SONIC 1 port of the LabPro
• Connect the CBL 2 or LabPro to the calculator using the Unit-to-Unit cable
• See the attached PDF file for detailed instructions for this activity
• Print pages 69 - 76 from the attached PDF file for your class
• #### During the Activity

Distribute the pages to your class.

• Attach the force sensor to the ring stand and suspend the bob and slinky 1 m above the motion detector
• Zero the force sensor, lift the bob by 10 cm and release it
• Record the distance, velocity, acceleration, and force data
• Examine distance, force, velocity, and acceleration versus time graphs and fill in the Data Sheet
• Fit a linear equation model to the force versus acceleration data
• #### After the Activity

Students' will complete the Data Collection and Analysis Sheet and answer the questions listed in it.

Review student results

• As a class, discuss questions that appeared to be more challenging
• Re-teach concepts as necessary