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General Knowledge - Physics - Discussion

Discussion Forum : Physics - Section 1 (Q.No. 2)
Physics
2.
It is easier to roll a stone up a sloping road than to lift it vertical upwards because
work done in rolling is more than in lifting
work done in lifting the stone is equal to rolling it
work done in both is same but the rate of doing work is less in rolling
work done in rolling a stone is less than in lifting it
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
84 comments Page 9 of 9.
Sruthi raj said:   1 decade ago
Like pulling is easier than pushing. Concept of friction.
RAJAL said:   1 decade ago
Work done in rolling case also include frictional coifficient of both the surface which reduce word done as compair to lifting.
Vivek said:   1 decade ago
Work done in rolling is less than lifting due to a extra work has been done in lifting due to gravity means against the gravity but in rolling on a inclined plane we get a work done by gravity in downward direction along the gravity.
Harini said:   1 decade ago
We need explanation please.
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