A bucket of water 50 kg is raised from a depth of 100 mts to the ground by a rope. The mass of the rope is 1 kg per meter . What is the work done.
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let's say at some time length of the rope is x (0<x<100m)
at that time let's say a small displacement occurs dx, which is infinitesimal .
the small work done at this time should be :
((1kg/m times x)+ 50kg)*(g)(dx) or (50+x)*g*dx
integrated this small work (dW) from x going to 100 to 0 and take magnitude.
at that time let's say a small displacement occurs dx, which is infinitesimal .
the small work done at this time should be :
((1kg/m times x)+ 50kg)*(g)(dx) or (50+x)*g*dx
integrated this small work (dW) from x going to 100 to 0 and take magnitude.
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