Discussion :: Physics
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It is easier to roll a barrel full of coal tar than to pull it because
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A.
the full weight of the barrel comes into play when it is pulled
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B.
the rolling friction is much less than the sliding friction
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C.
more surface area of the barrel is in contact with the road when it is pulled
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D.
coal tar is a liquid and it flows in the barrel when it is rolled
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Answer : Option B
Explanation :
No answer description available for this question.
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