A beaker is filled with water to its brim. A child while playing drops his ball of mass 1 kg into it and eventually ends up wetting himself with water. He weighs the water fallen on him and found it to be 1 N. Assuming that the ball is dropped slowly and all the spilled-over water fell on the child, find the buoyant force acting on the ball.
1N
According to Archimedes principle, the weight of the liquid displaced is equal to the buoyant force. Here the weight of the displaced liquid is 1 N, so the buoyant force will also be 1 N.