The new england merchants bank building in boston is 152 m high. on windy days it sways with a frequency of 0.14 hz , and the acceleration of the top of the building can reach 2.5 % of the free-fall acceleration, enough to cause discomfort for occupants.
what is the total distance, side to side, that the top of the building moves during such an oscillation?

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

measuring things 1 litre of water