Question

Make a 50 cm x 50 cm bed of dry sand about 10 cm in thickness. Make sure that its top surface is levelled. Take a wooden or a plastic stool. Cut two strips of graph paper each with a width of 1 cm. Paste them vertically on any leg of the stool one al the bottom and the other from the top Now gently put the stool on the sand bed with its legs resting on the sand. Increase the size of sand bed it required. Now put a load, say a school bag full of books, on the seat of the stool. Mark the level sand on the graph strip. This would give you the depth, if any, to which the legs of stool sink in sand Next, turn the stool upside down so that now it rests on its seat on the sand bed. Note the depth to which the stool sinks now Next, put the same load on the stool and note the depth to which it sinks in the sand. Compare the pressure exerted by the stool in the two situations.
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Answer 1

Explanation:

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Answer 2

Answer:

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