Quiz on Mechanics
{“questions”:{“9yrgr”:{“id”:”9yrgr”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:”What is the SI unit of force?\r\n”,”desc”:””,”hint”:””,”answers”:{“5pc8g”:{“id”:”5pc8g”,”image”:””,”imageId”:””,”title”:”a) Kilogram\r\n”},”hhle1″:{“id”:”hhle1″,”image”:””,”imageId”:””,”title”:”b) Meter\r\n”},”y7boi”:{“id”:”y7boi”,”image”:””,”imageId”:””,”title”:”c) Newton\r\n”,”isCorrect”:”1″},”pat56″:{“id”:”pat56″,”image”:””,”imageId”:””,”title”:”d) Joule\r\n”}}},”ivpul”:{“id”:”ivpul”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:”What is the formula for gravitational potential energy?\r\n”,”desc”:””,”hint”:””,”answers”:{“z9kwx”:{“id”:”z9kwx”,”image”:””,”imageId”:””,”title”:”a) PE=mghPE = mghPE=mgh\r\n”,”isCorrect”:”1″},”qpux5″:{“id”:”qpux5″,”image”:””,”imageId”:””,”title”:”b) PE=mv2PE = mv^2PE=mv2\r\n”},”6ycy0″:{“id”:”6ycy0″,”image”:””,”imageId”:””,”title”:”c) PE=12mv2PE = \\frac{1}{2}mv^2PE=21mv2\r\n”},”m1ngs”:{“id”:”m1ngs”,”image”:””,”imageId”:””,”title”:”d) PE=GMmr2PE = \\frac{GMm}{r^2}PE=r2GMm\r\n”}}},”xf62z”:{“id”:”xf62z”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:”A body is moving in a circular path with constant speed. The force acting on it is:\r\n”,”desc”:””,”hint”:””,”answers”:{“wi1nc”:{“id”:”wi1nc”,”image”:””,”imageId”:””,”title”:”a) Centripetal force\r\n”,”isCorrect”:”1″},”3a2sl”:{“id”:”3a2sl”,”image”:””,”imageId”:””,”title”:”b) Gravitational force\r\n”},”3lnim”:{“id”:”3lnim”,”image”:””,”imageId”:””,”title”:”c) Frictional force\r\n”},”gzl9t”:{“id”:”gzl9t”,”image”:””,”imageId”:””,”title”:”d).