Education Technology

# Activities

• ##### Subject Area

• Science: Physics: Work, Energy and Momentum

9-12

120 Minutes

• ##### Device
• TI-Nspire™
• TI-Nspire™ CAS
• ##### Software

TI-Nspire™
TI-Nspire™ CAS

CBR™/CBR 2™

• ##### Other Materials
1. dynamics cart
2. track for cart with a pulley attached
3. a known mass
4. string
5. meter stick
6. balance

## Work-Energy Theorem Applied to a Cart Pulled Down a Track

#### Activity Overview

In this activity, students will analyze the relationship between the maximum speed of a cart pulled by a falling mass and the work done by gravity. Students will measure the speed of the cart, calculate the work in each trial, make a graph of speed vs. work, and determine an equation which will fit the data. This equation will be compared to the Work-Energy theorem.

#### Before the Activity

Students should be introduced to the concepts of work and kinetic energy prior to this activity.

#### During the Activity

Students will create their own .tns files as part of this activity. The document provides step-by-step instructions for data collection and data analysis. Embedded within the instructions are questions intended to guide students through the analysis. These questions should help students as they complete a lab report. The document includes four sample screen shots to help visualize how the data is presented and analyzed.

#### After the Activity

Students may find a class discussion of the results and a comparison of data from different groups very beneficial. The data, graphs, and the students' responses to questions may form the core of a lab report for assessment purposes.