A heavy chain of length 1m and weight 20kg hangs vertically with one end attached to a peg and carries a block of mass 10 kg at the other end. Find the work done in winding 50 cm of chain round the peg |
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a) |
85 J |
b) |
100 J |
c) |
120 J |
d) |
125 J |
A heavy chain of length 1m and weight 20kg hangs vertically with one end attached to a peg and carries a block of mass 10 kg at the other end. Find the work done in winding 50 cm of chain round the peg |
|||||||
a) |
85 J |
b) |
100 J |
c) |
120 J |
d) |
125 J |