4. Take a wooden log and tie it with a rope and drag it with the help of a rope in the ground . Now put some pieces of cylindrical wood below the log and drag it again on the ground.How much effort do you apply in both the cases ? what do you conclude form this activity ?
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Take a wooden log and tie it with a rope and drag it with the help of a rope in the ground . Now put some pieces of cylindrical wood below the log and drag it again on the ground.How much effort do you apply in both the cases ? what do you conclude form this activity ?
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