A porter with a suitcase on his head is climbing up a flight of stairs with a uniform speed- The work done by the -weight of the suitcase- on the suitcase is nbsp-a- positive nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- -b- negative nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp-c- zero nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp- nbsp-d- undefined

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Standard VI

Physics

Work Done

A porter with...

Question

A porter with a suitcase on his head is climbing up a flight of stairs with a uniform speed. The work done by the 'weight of the suitcase' on the suitcase is
(a) positive (b) negative (c) zero (d) undefined

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Solution

Dear Student ,
when a porter with a suit case on his head is climbing up a flight of stairs with uniform speed then the work done by the weight of the suit case is positive .
As here all the forces that act on the suit case is in the upward direction .
Regards

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A porter with a suitcase on his head is climbing up a flight of stairs with a uniform speed. The work done by the 'weight of the suitcase' on the suitcase is (a) positive (b) negative (c) zero (d) undefined

Dear Student , when a porter with a suit case on his head is climbing up a flight of stairs with uniform speed then the work done by the weight of the suit case is positive . As here all the forces that act on the suit case is in the upward direction . Regards

A porter with a suitcase on his head is climbing up a flight of stairs with a uniform speed. The work done by the 'weight of the suitcase' on the suitcase is
(a) positive (b) negative (c) zero (d) undefined

Dear Student ,
when a porter with a suit case on his head is climbing up a flight of stairs with uniform speed then the work done by the weight of the suit case is positive .
As here all the forces that act on the suit case is in the upward direction .
Regards