A large block of ice 10 m thick has a vertical hole drilled in it and is floating in a lake. The minimum length of rope required to draw a bucket full of water through the hole is. (density of ice=900 kg/m3 )

Force Buoyancy = Vin dl g                Weight of the body = Vb db g                A×10×900g=A×(10−x)1000g                90=(10–x)10                90=100−10x⇒10x=100−90                                               10x=10                              ⇒ x=1m