Question

A uniform chain is hanged by two hinges 1m above ground as shown in figure-1. Now its middle point is pulled down, so that its becomes straight as in
figure-2. During pulling downward 0.4 Joules work is done. Mass of chain is 2 kg and length is 2m. Find initial height of COM (in meters) from ground in
figure-1.
1m
im
1m
10,5m
10.5m
Figure-1
Figure-2​

Answer 1

During pulling download