Define pressure. Give its SI unit.
The total force applied per unit area is called pressure.
Mathematically,
Pressure (P) = Force (F) / Area (A)
Its SI unit is pascal (Pa).
Why does an iceberg float on water?
We all know that the density of the iceberg is less than that of the water. So, it experiences more upthrust as it displaces the water more than its weight. Hence, it floats on water.