under which of the following conditions is work done
a. A man supports a heavy...
under which of the following conditions is work done
a. A man supports a heavy...
under which of the following conditions is work done
a. A man supports a heavy load above his head with his hands
b. A woman holds a pot of water
c. A boy climbs onto a table
d. A man pushes against a stationary petrol tanker
e. A bag of coca stands on a platform?
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