Flash sims are no longer supported in modern browsers.

Donate to help us continue converting sims to HTML5!

# Pendulum Lab

 Download Embed close Embed a running copy of this simulation Use this HTML to embed a running copy of this simulation. You can change the width and height of the embedded simulation by changing the "width" and "height" attributes in the HTML. Embed an image that will launch the simulation when clicked
Click to Run
Use this HTML code to display a screenshot with the words "Click to Run". Periodic Motion Simple Harmonic Oscillator Conservation of Energy PhET is supported by and educators like you.
 Back to HTML5 Version

### Topics

• Periodic Motion
• Simple Harmonic Oscillator
• Conservation of Energy
• Period
• Pendulum

### Description

Play with one or two pendulums and discover how the period of a simple pendulum depends on the length of the string, the mass of the pendulum bob, the strength of gravity, and the amplitude of the swing. Observe the energy in the system in real-time, and vary the amount of friction. Measure the period using the stopwatch or period timer. Use the pendulum to find the value of g on Planet X. Notice the anharmonic behavior at large amplitude.

### Sample Learning Goals

• Design experiments to determine which variables affect the period of a pendulum
• Quantitatively describe how the period of a pendulum depends on these variables
• Explain the small-angle approximation, and define what constitutes a “small” angle
• Determine the gravitational acceleration of Planet X
• Explain the conservation of mechanical energy, using kinetic energy and gravitational potential energy
• Describe the Energy Graph from the position and speed of the pendulum
Version 2.03

### Teacher Tips

 Overview of sim controls, model simplifications, and insights into student thinking ( PDF ).

### Teacher-Submitted Activities

Algebra-based Physics Semester one lessons, clicker questions, and schedule in pdf (Inquiry Based) Trish Loeblein HS
UG-Intro
HW
Lab
Demo
Physics
Concept questions for Physics using PhET (Inquiry Based) Trish Loeblein HS
UG-Intro
MC Physics
Pendulum Basics Inquiry Trish Loeblein MS Lab Physics
Pendulum Lab 2: Find g (Inquiry Based) Trish Loeblein UG-Intro
HS
HW Mathematics
Physics
Pendulum Lab 1: intro to pendulums (Inquiry Based) Trish Loeblein HS
UG-Intro
HW
Lab
Physics
Mathematics
Swinging Physics Using Pendulum Phet John Lewis and Michi Ishimoto HS
UG-Intro
Lab
Discuss
Physics
Pendulum investigation for Middle School Jefferson County Middle School Workshop MS Lab Mathematics
Physics
How do PhET simulations fit in my middle school program? Sarah Borenstein MS Other Earth Science
Chemistry
Physics
Biology
Pendulum Lab Learning Goals by design team (Inquiry Based) Trish Loeblein, Mike Dubson Other Other Mathematics
Physics
Experimental Design Practice Mary Stowell HS
MS
Remote
Guided
Lab
Other
Pendulum Virtual Lab 2021 Robin Ritland MS Lab
Guided
Remote
Physics
pendulum exp khawla ahmed UG-Intro Remote
Lab
Physics
MS and HS TEK to Sim Alignment Elyse Zimmer MS
HS
Other Biology
Physics
Chemistry
Mapping of PhET and IBDP Physics Jaya Ramchandani HS Other Physics
PhET Simulations Aligned for AP Physics C Roberta Tanner HS Other Physics
KE and PE with the pendulum, Student Don Loving MS
UG-Intro
HS
Lab
Guided
Physics
Pendulum variables Jefferson County Middle School Workshop MS Lab Physics
Kinematics Wang Yunhe HS Lab Physics
Pendulum Lab COV Investigations Alicia Ferrill K-5
MS
CQs
Lab
Demo
HW
Other
Pendulum Lab Orkida Dedushi MS Lab Physics
Simple Pendulum Jay Gregorio UG-Intro
HS
MS
CQs
Lab
HW
Pendulum Energy Denise Wetli UG-Intro Lab
Pendulum Lab gayle bari HS Lab
8th Grade Science teacher Richard Ballard MS Lab Physics
Determination of Gravitational Acceleration Roberto Marrero HS Lab Physics
The pendulum lab - Period investigation Geoff Phillips HS Lab
Moviment d'un pèndol Jordi Plana MS HW
Demo
Physics
practicum laboratory test "pendulum"/ practicum toets "slingeren" Peter Selen HS Lab Physics
Waves and sound(in dutch golven en trillingen) Corné de Boer HS Demo
La mesure du temps Moreau Gwenael MS Lab Physics
Getaran Poniyem Joni MS Lab Physics
AYUNAN SEDERHANA Daimah Binti Abdul Rokhim HS Lab Physics
laboratorijas darbs Natalija Shilde HS
Other
MC
Lab
Demo
Other
Guided
HW
Discuss
Mathematics
Physics
Teaching pendulum experimental in Persian Fatemeh Shahsavari UG-Adv
UG-Intro
Lab
Remote
Demo
Physics
Cálculo da aceleração da gravidade (g) utilizando o pêndulo simples Rodrigo Nogueira HS
HW
Demo
Guided
Lab
Discuss
Earth Science
Physics
Laboratorio del péndulo simple Orlando E González Pérez Grad HW
Laboratorio de Péndulo Simple Leonardo Correa Grad
MS
HW
Demo
Lab
Physics
Mathematics
Amharic All Amharic ዠውዣዌ
Arabic All العربية pendulum-lab
Arabic (Saudi Arabia) All العربية (السعودية) pendulum-lab
Basque All Euskara Laborategi-pendulua
Belarusian All беларускі Лабараторыя маятнікаў
Bengali All Bengali পেন্ডুলাম ল্যাব
Bosnian All Bosanski Klatno
Catalan All català Estudi del pèndol
Chinese (Simplified) All 中文 (中国) 单摆实验
Chinese (Traditional) All 中文 (台灣) pendulum-lab
Croatian All hrvatski pendulum-lab
Czech All čeština pendulum-lab
Danish All Dansk Pendul-laboratoriet
Dutch All Nederlands pendulum-lab
Estonian All Eesti Pendlikatse
Finnish All suomi Heilurilaboratorio
French All français pendulum-lab
Galician All Gallegan Péndulo Lab
Georgian All ქართული ქანქარების ლაბორატორია
German All Deutsch Pendel-Labor
Greek All Ελληνικά Εργαστήριο εκκρεμούς
Haitian All Haitian labo pendil la
Hebrew All עברית מעבדת מטוטלת
Hungarian All magyar Ingalabor
Indonesian All Bahasa Indonesia Lab Pendulum
Italian All italiano Laboratorio Pendoli
Japanese All 日本語 振り子の実験
Kazakh All Kazakh Маятниқтың зертханасы
Khmer All Khmer មន្ទីរ​ពិសោធន៍​ប៉ោល
Korean All 한국어 추 실험
Kurdish All کوردی په‌ندۆڵی ساده‌ هاوڕێ محمد
Kurdish (Turkey) All Kurdish (Turkey) Ezmûngeha Dardarokê
Latvian All Latviešu Svārsta laboratorija
Lithuanian All Lietuvių Švytuoklė
Macedonian All македонски Нишало
Malay All Bahasa Melayu Ujikaji Bandul
Mongolian All Монгол (Монгол) pendulum-lab
Norwegian Bokmal All Norsk bokmål Pendel-laboratorium
Persian All فارسی آزمایشگاه آونگ
Portuguese (Brazil) All português (Brasil) Laboratório de Pêndulos
Russian All русский Лаборатория маятников
Serbian All Српски Клатно
Slovenian All Slovenščina pendulum-lab
Spanish All español Laboratorio de Péndulo
Spanish (Mexico) All español (México) Laboratorio de Péndulo
Spanish (Peru) All español (Perú) Laboratorio de Péndulos
Swahili All Swahili maabara ya pendulum
Swedish All svenska Pendellab
Tamil All Tamil ஊசல் செய்முறைச் சாலை
Thai All ไทย การทดลองการแกว่งของลูกตุ้มนาฬิกา
Turkish All Türkçe Sarkaç Laboratuvarı
Turkmen All Turkmen Maýatnik laboratoriýasy
Ukrainian All українська Лабораторія маятників
Vietnamese All Tiếng Việt Phòng thí nghiệm Con lắc đơn
Windows Macintosh Linux
Microsoft Windows
XP/Vista/7/8.1/10
Macromedia Flash 9 or later
OS X 10.9.5 or later
Macromedia Flash 9 or later
Macromedia Flash 9 or later
Design Team Third-party Libraries Thanks To