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

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

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Physics
Two identical solid pieces, one of gold and other of silver, when immersed completely in water exhibit equal weights. When weighed in air (given that density of gold is greater than that of silver)

Weighing will depend on their masses
The silver piece will weigh more
The gold piece will weigh more
Both silver and gold pieces weigh equal

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