Grade 12th pass8 grade science
A labourer has to push a heavy trunk. What should be done to reduce his effort in pushing it and why ?
A labourer has to push a heavy trunk. What should be done to reduce his effort in pushing it and why ?
1 Answer
Pawan Prajapati
The labourer should put some cylindrical logs of wood under the trunk. In this way the area of contact between the two surfaces is reduced. Rolling friction is less than sliding friction.
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