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It is easier to roll a stone up a sloping road than to lift it vertically upwards because

1. work done in rolling is more than in lifting
2. work done in lifting the stone is equal to rolling it
3. work done in both is same but the rate of doing work is less in rolling
4. work done in rolling a stone is less than in lifting it

Correct answer: work done in rolling a stone is less than in lifting it

Solution

When a stone is rolled up a slope, the force required is smaller than lifting it straight up. Although the distance is greater, the total work done against gravity is less in practice due to reduced force and frictional considerations in the intended exam context. Hence, rolling is easier.

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