General Knowledge - Physics - Discussion
Discussion Forum : Physics - Section 1 (Q.No. 2)
2.
It is easier to roll a stone up a sloping road than to lift it vertical upwards because
Discussion:
84 comments Page 6 of 9.
Hsu pyae sone said:
9 years ago
For me, it is difficult to say the difference between C and D. Which one is the truth? Someone explain it clearly to understand.
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.
Vrishali said:
1 decade ago
Stone required less energy to rolling than lifting upward. It due to gravitational force of attraction acting on stone.
Sumit khilwani said:
1 decade ago
Force of gravity acting on stone in vertical position is greater than that of fprce acting during slidding position.
Mehak said:
1 decade ago
Because in lifting a ball work done is against gravity and so large effort is to be applied than to roll it.
Emmy said:
7 years ago
I strongly agree with the answer, because when you roll less effort is applied than when lifting. Thanks.
(2)
Daniel said:
1 decade ago
C is the correct answer. Work done is the same but the rate at which the work done is less in the slope.
Hishmakhan said:
1 decade ago
May be because of force. Because on rolling as compared to lifting the required amount of force is less.
Jai said:
1 decade ago
Force of gravity acting on stone in vertical position is greater than that of force acting.
Mafel said:
1 decade ago
It is easy to roll down because the work is done when we throw it in vertical direction.
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