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ashna
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A potter moving vertically up the stairs with a suitcase on his head does work . why ?
 2 years ago
 2 years ago
ashna Group Title
A potter moving vertically up the stairs with a suitcase on his head does work . why ?
 2 years ago
 2 years ago

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akash123 Group TitleBest ResponseYou've already chosen the best response.1
try it by ur own...I'll help u
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.0
but i dont know and that is why i asked this question , give me the hints :)
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.0
and if you dunt mind can you teach me all types of questions like dis ?
 2 years ago

akash123 Group TitleBest ResponseYou've already chosen the best response.1
1st make a block of mass m as I did in last question...
 2 years ago

akash123 Group TitleBest ResponseYou've already chosen the best response.1
dw:1348895105918:dw
 2 years ago

akash123 Group TitleBest ResponseYou've already chosen the best response.1
and coolie is holding it on his head...right?
 2 years ago

akash123 Group TitleBest ResponseYou've already chosen the best response.1
now u have to tell...who or what is exerting force on this load?
 2 years ago

akash123 Group TitleBest ResponseYou've already chosen the best response.1
1st earth is pulling towards its center by force mg..right?
 2 years ago

akash123 Group TitleBest ResponseYou've already chosen the best response.1
dw:1348895307961:dw
 2 years ago

akash123 Group TitleBest ResponseYou've already chosen the best response.1
and u have to find out..work done by the potter?
 2 years ago

akash123 Group TitleBest ResponseYou've already chosen the best response.1
and the potter is exerting a force N on the load and the direction of force is vertically upward.
 2 years ago

akash123 Group TitleBest ResponseYou've already chosen the best response.1
again work done by potter= Force. displacement = N *( displacement) * cos(theta)
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.0
vertical so cos 0 = 1
 2 years ago

akash123 Group TitleBest ResponseYou've already chosen the best response.1
now this time u have to tell the value of theta if potter is moving vertically up
 2 years ago

akash123 Group TitleBest ResponseYou've already chosen the best response.1
yes...perfectly right...:)
 2 years ago

akash123 Group TitleBest ResponseYou've already chosen the best response.1
so potter has done some work...because work done is not equal to zero
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.0
yeah , okay ty :D
 2 years ago
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