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A brick is pulled by a spring balance . (a) what does the reading of the spring balance when the brick just begins to slide indicate? (b) the brick is now wrapped in a piece of polythene .How does the reading of spring bakance change and why?(c) How does the reading of the spring balance change if the brick is wrapped in jute cloth |
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Answer» not there to weewwwwwwww this is what |
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