No work is done on a suitcase if a man holding it walks on a horizontal platform,why?
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Work done in physics is not as of daily life.
Until displacement by a force applied,there is no work.
So when the worker carrying a luggage on his head or on his hand then no work is done.
It has two causes,
As you know W=F⃗ ⋅S⃗ W=F→⋅S→,
so here there is no displacement,hence no work done.
According to work energy theorem work done is equal to change in kinetic energy.But here no change in kinetic energy.
So work done is zero.
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HERE'S THE ANSWER ✌
⤵⤵⤵⤵⤵⤵
Work done in physics is not as of daily life.
Until displacement by a force applied,there is no work.
So when the worker carrying a luggage on his head or on his hand then no work is done.
It has two causes,
As you know W=F⃗ ⋅S⃗ W=F→⋅S→,
so here there is no displacement,hence no work done.
According to work energy theorem work done is equal to change in kinetic energy.But here no change in kinetic energy.
So work done is zero.
✅✅✅✅✅✅
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Answered by
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work done in physical words mean that if an object's changes it state then it is said to be work done.
here the man is just holding a south case in his hands and the suitcase doesn't change its position and it is at rest hence we can say no work is done or zero work done
hope u understand easier
here the man is just holding a south case in his hands and the suitcase doesn't change its position and it is at rest hence we can say no work is done or zero work done
hope u understand easier
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