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Question
It is easier to roll a stone up a sloping road than to lift it vertical upwards because
Options:
A .  Work done in rolling is more than in lifting.
B .  Work done in lifting the stone is equal to rolling it.
C .  Work done in both is same but the rate of doing work is less in rolling.
D .  Work done in rolling a stone is less than in lifting it.
Answer: Option D

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