Pressure in Solid

If a nail and an equal mass of marble we drop, do you know why a nail give deeper hole than a marbel if dropped from the same height? Well, this time we will learn about the pressure on solids. How to calculate the amount of pressure on solids and what are the affects the amount of pressure on solids? Pressure is the force acting on the object divided by the surface area of ​​the field in which that style works. Mathematically it can be written:

P = Pressure (N / mТВ) F = Force press (N) A = area of ​​the field (mТВ) Pressure unit in the International System (SI) is N / mТВ, this unit is also called the pascal (Pa). 1 Pa = 1 N / mТВ In order to better understand the pressure on the solid material, consider the following sample questions: Problem 1: Consider the following picture!

If each block has the same weight, which is 12 N, beams Which gives greater emphasis to the floor? Balock 1

A = 30 cm x 10 cm = 300 cm² = 0,03 m²

P = 400 N/m² Balock II

A = 20 cm x 10 cm = 200 cm² = 0,02 m²

P = 600 N/m² Well, from the example problems can we can take conclusions about the pressure on the solids as follows: Pressure is proportional with force and inversely with Area

Thus, now you can explain why a nail gives a deeper hole than the a marble if dropped from the same height??