Balancing Act with a Broomstick Experiment (ASL)
Emily Calandrelli
[{'start': '0.500', 'end': '3.436', 'text': 'Have you ever wondered\nhow does balancing work?'}, {'start': '3.503', 'end': '5.939', 'text': 'Today, we are going to learn\nabout all of that and more'}, {'start': '6.005', 'end': '9.342', 'text': 'with my simple "Balancing Act\nwith a Broomstick" experiment.'}, {'start': '9.409', 'end': '11.010', 'text': "Hi, everyone,\nI'm Emily Calandrelli,"}, {'start': '11.077', 'end': '13.646', 'text': 'MIT engineer and host\nof "Emily\'s Wonder Lab,"'}, {'start': '13.713', 'end': '15.515', 'text': 'and on my channel we learn about'}, {'start': '15.582', 'end': '17.684', 'text': 'all things space and science.'}, {'start': '17.751', 'end': '20.687', 'text': 'So grab your broomsticks\nand get ready to balance.'}, {'start': '20.754', 'end': '22.956', 'text': '[broomstick taps]'}, {'start': '23.022', 'end': '24.958', 'text': "♪ Emily's Science Lab ♪"}, {'start': '25.024', 'end': '27.227', 'text': '♪ Stay curious and\nkeep exploring ♪'}, {'start': '27.293', 'end': '28.862', 'text': "♪ Emily's Science Lab ♪"}, {'start': '28.928', 'end': '32.766', 'text': '♪ Stay curious and\nkeep exploring ♪'}, {'start': '32.832', 'end': '35.301', 'text': 'If you were asked to\nbalance this object,'}, {'start': '35.368', 'end': '37.670', 'text': 'where would you\nplace your finger?'}, {'start': '37.737', 'end': '40.340', 'text': 'Probably right in the center,'}, {'start': '40.407', 'end': '42.475', 'text': 'because this object\nis homogeneous,'}, {'start': '42.542', 'end': '45.145', 'text': "meaning it's the\nsame from end to end."}, {'start': '45.211', 'end': '48.948', 'text': 'So its balancing point,\nits center of mass'}, {'start': '49.015', 'end': '51.017', 'text': 'is right in the middle.'}, {'start': '51.084', 'end': '53.920', 'text': 'This experiment is all\nabout center of mass.'}, {'start': '53.987', 'end': '56.823', 'text': 'The center of mass of an\nobject is the average position'}, {'start': '56.890', 'end': '58.892', 'text': 'of all the mass in the object.'}, {'start': '58.958', 'end': '61.594', 'text': 'For something simple like\nthis, the center of mass'}, {'start': '61.661', 'end': '65.698', 'text': "is right in the center,\nbut that's not always the case."}, {'start': '65.765', 'end': '68.701', 'text': "Now let's try something\ntrickier, this broom."}, {'start': '68.768', 'end': '70.537', 'text': 'Where do you think you\nneed to put your finger'}, {'start': '70.603', 'end': '71.805', 'text': 'along the broom?'}, {'start': '71.871', 'end': '74.374', 'text': "Let's put it right\nabout in the center."}, {'start': '74.441', 'end': '75.942', 'text': 'What do you think will happen?'}, {'start': '76.810', 'end': '77.677', 'text': '[broomstick clanks]'}, {'start': '77.744', 'end': '79.179', 'text': "It doesn't balance, does it?"}, {'start': '79.245', 'end': '81.181', 'text': "That's because for\na broom like this,"}, {'start': '81.247', 'end': '84.818', 'text': 'the center of mass\nis not in the center.'}, {'start': '84.884', 'end': '87.387', 'text': 'Remember, the center of\nmass is the average position'}, {'start': '87.454', 'end': '89.656', 'text': 'of all the mass in the object.'}, {'start': '89.722', 'end': '92.358', 'text': "There's more mass in\na broom over here."}, {'start': '92.425', 'end': '93.993', 'text': "So let's find the\ncenter of mass."}, {'start': '94.060', 'end': '96.329', 'text': 'Now, parents and adults, you\nmight wanna hold the broomstick'}, {'start': '96.396', 'end': '97.864', 'text': 'as your child does this.'}, {'start': '97.931', 'end': '99.866', 'text': 'One of the best ways you\ncan balance a broomstick'}, {'start': '99.933', 'end': '102.101', 'text': 'is putting two\nfingers on one side'}, {'start': '102.168', 'end': '104.404', 'text': 'and two fingers on the other,'}, {'start': '104.471', 'end': '108.308', 'text': 'and just bring them\ncloser towards each other,'}, {'start': '108.374', 'end': '111.344', 'text': 'balancing the broom\nin the process.'}, {'start': '111.411', 'end': '113.613', 'text': 'Notice where your fingers go.'}, {'start': '113.680', 'end': '115.748', 'text': "It's not in the center, is it?"}, {'start': '115.815', 'end': '120.320', 'text': "That's because on a broom,\nthere's more mass on one side."}, {'start': '120.386', 'end': '124.257', 'text': 'That shifting your center\nof mass from the center'}, {'start': '124.324', 'end': '125.625', 'text': 'over to here.'}, {'start': '125.692', 'end': '128.061', 'text': 'Because remember,\nyour center of mass'}, {'start': '128.127', 'end': '132.198', 'text': 'is the average position of\nall the mass in the object.'}, {'start': '132.265', 'end': '134.033', 'text': "When there's more\nmass on this side,"}, {'start': '134.100', 'end': '136.302', 'text': "that's gonna shift\nyour balancing point,"}, {'start': '136.369', 'end': '140.406', 'text': 'your center of mass, over here,\naway from your center,'}, {'start': '140.473', 'end': '142.675', 'text': 'and that is how you\nbalance a broomstick.'}, {'start': '142.742', 'end': '144.177', 'text': 'Thanks for learning\nall about balance'}, {'start': '144.244', 'end': '145.512', 'text': 'and center of mass with me.'}, {'start': '145.578', 'end': '147.247', 'text': 'If you like this one,\ncheck out my bestselling'}, {'start': '147.313', 'end': '149.716', 'text': '"Stay Curious and Keep\nExploring" book series'}, {'start': '149.782', 'end': '152.051', 'text': 'for 99 more science experiments.'}, {'start': '152.118', 'end': '153.620', 'text': "I'm Emily Calandrelli."}, {'start': '153.686', 'end': '156.456', 'text': 'Subscribe to learn more about\nall things science and space'}, {'start': '156.523', 'end': '159.792', 'text': 'and remember, stay curious\nand keep exploring.'}, {'start': '159.859', 'end': '160.994', 'text': "I'll see you next time."}, {'start': '162.495', 'end': '165.331', 'text': "♪ Emily's Science Lab ♪"}]