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A block of mass 20 kg is hung with the help of idealstring, pulleys and spring (Spring constantk = 1000 N/m) as shown in figure. If block is inequilibrium position then extension in the spring willbe (g = 10 ms-2)TO20 kg(1) 10 cmB 5 cm208 (2) 2.5 cm0 (4) 15 cm |
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Answer» Explanation: well where is the figure : / But I'm assuming the only force to be GRAVITATIONAL force F = mg = 20 X 10 = 200N k = 1000 N/m By Hooke's LAW, F = k*x => 200 = 1000*x => x = 0.2 m = 20 cm Hence the extension in the SPRING will be 20 cm |
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