Question

Select four different materials such as a piece of sandpaper, a towel, a sheet of newspaper and a shiny polythene bag. Take a brick or a stone and tie it with a string long enough to pull the brick. On the free end of the string, attach a spring balance such that you can pull the brick using it. Now one by one, place each of the materials below the brick and pull it. Note down the reading on spring balance each time and compare the results. ​

Answer 1

Answer:

om goud sis a om goud 9mmmm

Answer 2

Answer:

this is the answer

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