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How much work is done by a coolie walking on a horizontal platform with a load on his head ? justify .
 one year ago
 one year ago
How much work is done by a coolie walking on a horizontal platform with a load on his head ? justify .
 one year ago
 one year ago

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akash123Best ResponseYou've already chosen the best response.1
dw:1348894242952:dw
 one year ago

akash123Best ResponseYou've already chosen the best response.1
N is the force applied by coolie on the load...right?
 one year ago

akash123Best ResponseYou've already chosen the best response.1
dw:1348894348026:dw
 one year ago

akash123Best ResponseYou've already chosen the best response.1
now...definition of work= F . (Displacement) it's a dot product....right?
 one year ago

akash123Best ResponseYou've already chosen the best response.1
dw:1348894463777:dw
 one year ago

akash123Best ResponseYou've already chosen the best response.1
work done by coolie = N *( displacement) * cos 90'
 one year ago

sam291Best ResponseYou've already chosen the best response.0
But if he wasn't exerting a force with the help of friction, on the platform, in the opposite direction from where he's going, then he wouldn't move forward. And the force in the opposite direction caused by friction will be greater because of the load on his head. Am I wrong?
 one year ago
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