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Balbeer M.
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GK
It is easier to roll a barrel full of coal tar than to pull it because
the full weight of the barrel comes into play when it is pulled
1 vote (100%)
the full weight of the barrel comes into play when it is pulled
the rolling friction is much less than the sliding friction
0 votes (0%)
the rolling friction is much less than the sliding friction
more surface area of the barrel is in contact with the road when it is pulled
0 votes (0%)
more surface area of the barrel is in contact with the road when it is pulled
coal tar is a liquid and it flows in the barrel when it is rolled
0 votes (0%)
coal tar is a liquid and it flows in the barrel when it is rolled
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