Homework Help: physics

Posted by jessie on Thursday, January 27, 2011 at 12:53pm.

in 35s, sam lifts his 8 kg case from the floor to .8m above the ground (in his arms) carries it 24m across the room(at the same height), and puts it on a conveyor belt 1.8 m above the floor. at this point, the machine raises the bag 13 more meters in a mere 2s. compare the mans power to the machines

physics - bobpursley, Thursday, January 27, 2011 at 1:44pm
man'spower= work/time= 8g*.8/35 wonder how he can lift so slowly.

machine: 8g*13/2

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