Three blocks of masses 6kg. 4kg and 2kg are pulled on a rough surface by applying a constant force 20 N. The values fo coefficient of friction between blocks and surface are shown in figure. (u = 0.2)
(
20 N
6 kg
4 kg
2 kg
13. In the arrangement shown tension in the string connecting 4 kg and 6 kg masses is
(
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