You will learn about "Potential and Kinetic Energy" in this video. The law of conservation of energy states that energy cannot be created or destroyed, it can only be converted from one form to another. Potential energy is energy due to position while kinetic energy is energy due to motion. The unit of energy is joules. To understand this better, let us take an example. Look at this pendulum. When we hold it on one side, at that time, it has a certain amount of potential energy. When the pendulum is released, this potential energy starts getting converted to kinetic energy. As the pendulum moves back and forth, the kinetic energy is converted to potential energy and vice versa until the pendulum stops. The formula for potential energy is mgh, where m = mass, g = acceleration due to gravity and h = height. If we climb on top of a tree, the potential energy possessed by us will be mgh. Here, if we assume mass = 30 kg, acceleration due to gravity = 9.8 m/s^2 and height of the tree as 20 metres, then the potential energy would be 30 * 9.8 * 20 = 5880 joules. At the top, the K.E. is zero. If we jump, then the stored potential energy starts getting converted to kinetic energy. Just before we land, all of the potential energy gets converted to kinetic energy. Now, the potential energy = 0. The kinetic energy can be calculated using the formula, 1/2mv^2 where m = mass and v = velocity. Educational Videos for people of all ages: http://www.SmartLearningforAll.com Subscribe to our YouTube Channel: http://www.youtube.com/user/Smartlearningforall?sub_confirmation=1
Purchase: http://hilaroad.com/video/ Galileo's investigation of the pendulum played a role in the evolution of science. He performed some of the first experiments while discovering the relationship among length, mass and displacement. If you are teaching the scientific method, the pendulum is a good project to start with. Galileo probably gained insight into many issues around motion from his investigation of the pendulum. The video also mentions issues with the church and academia.
When you hear the word, "Work," what is the first thing you think of? Maybe sitting at a desk? Maybe plowing a field? Maybe working out? Work is a word that has a little bit of a different meaning in Physics and today, Shini is going to walk us through it. Also, Energy and Power! -- Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios Crash Course Philosophy is sponsored by Squarespace. http://www.squarespace.com/crashcourse -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
String up a pendulum, move the bob to one side and let go to set the pendulum into oscillations. Use a stopwatch to measure the time the pendulum takes to complete ten oscillations. Diving this time by 10 gives us the period of the pendulum i.e. the time taken to undergo one oscillation. Decrease the pendulum's length and repeat the above to get the new time period. We see that as the length becomes shorter, the time period decreases. This shows us that the length of a pendulum and its time period are related
Follow us at: https://plus.google.com/+tutorvista/ Check us out at http://www.tutorvista.com/content/physics/physics-i/measurement-and-experimentation/simple-pendulum.php Simple Pendulum A simple pendulum that consists of a mass less and inelastic thread whose one end is fixed to a rigid support and a small bob of mass m which is suspended from the other end of the thread. Let l be the length of the pendulum, When the bob is slightly displaced and released, it oscillates about its equilibrium position. Please like our facebook page http://www.facebook.com/tutorvista
Fifteen uncoupled simple pendulums of monotonically increasing lengths dance together to produce visual traveling waves, standing waves, beating, and (seemingly) random motion. For more details see http://sciencedemonstrations.fas.harvard.edu/presentations/pendulum-waves The period of one complete cycle of the dance is 60 seconds. The length of the longest pendulum has been adjusted so that it executes 51 oscillations in this 60 second period. The length of each successive shorter pendulum is carefully adjusted so that it executes one additional oscillation in this period. Thus, the 15th pendulum (shortest) undergoes 65 oscillations. Our apparatus was built from a design published by Richard Berg [Am J Phys 59(2), 186-187 (1991)] at the University of Maryland. The particular apparatus shown here was built by our own Nils Sorensen. Video courtesy of Harvard Natural Sciences Lecture Demonstrations, © 2010 President and Fellows of Harvard College
Get Your Crash Course Physics Mug here: https://store.dftba.com/products/crashcourse-physics-mug Waves are cool. The more we learn about waves, the more we learn about a lot of things in physics. Everything from earthquakes to music! Ropes can tell us a lot about how traveling waves work so, in this episode of Crash Course Physics, Shini uses ropes (and animated ropes) to talk about how waves carry energy and how different kinds of waves transmit energy differently. -- Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashC... Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support CrashCourse on Patreon: http://www.patreon.com/crashcourse CC Kids: http://www.youtube.com/crashcoursekids
Purchase: http://hilaroad.com/video/ This video explains how to calculate the weight of a horse using Archimedes' Principle. Includes a demonstration with digital scales and overflow apparatus. The forces acting on hot air balloons, cargo and cruise ships is explained by this principle from the ancient Greeks. Marine architects and engineers use this basic principle to design floating structures - ships, submarines and oil rigs. Suitable as a learning resource for an introduction to buoyancy and Archimedes in physics and general science.
Check out this experiment and many others at http://www.incrediblescience.com Demonstrate the law of conservation of energy and momentum! This large Newton's Cradle is one of the most incredible physics toys ever made. Named after Sir Isaac Newton and his Third Law of Motion. This high quality version is over 7 1/4" tall and its polished metal and wooden base provides a great base for the balls to swing back and forth on.
Learn more at http://www.stevespanglerscience.com/content/science-video/the-coffee-cup-pendulum There's a strong possibility that Steve Spangler's swinging table tricks might come to a crashing halt. It's a test of Steve's scientific skill and Mark's quick reflexes. Grab a coffee cup and a spoon and prepare to amaze your dinner guests. About Steve Spangler Science... Steve Spangler is a celebrity teacher, science toy designer, speaker, author and an Emmy award-winning television personality. Spangler is probably best known for his Mentos and Diet Coke geyser experiment that went viral in. Spangler is the founder of www.SteveSpanglerScience.com, a Denver-based company specializing in the creation of science toys, classroom science demonstrations, teacher resources and home for Spangler's popular science experiment archive and video collection. Spangler is a frequent guest on the Ellen DeGeneres Show and Denver 9 News where he takes classroom science experiments to the extreme. For teachers, parents or DIY Science ideas – check out other sources of learning: Join the Science Club and check out other cool science experiments at - http://www.SteveSpanglerScience.com Sign up to receive a FREE Experiment of the Week- http://www.stevespanglerscience.com/experiment-of-the-week Attend a Spangler Hands-on Science Workshop for Teachers - http://www.stevespanglerscience.com/training Watch Steve on Local and National Media Appearances on YouTube at: https://www.youtube.com/user/SpanglerScienceTV