A 60 Kg girl sitting a table with a sides of 55 cm, 76 cm. Find the pressure exerted by
the girl?

1. given : mass(m)=50kg

Area(A) = (55×76)cm² × 10-⁴ because

convert in m²

Use formula for pressure ,P=F/A

How to get F?use this formula F=ma (a is acceleration /gravity)

F=ma

F=60 kg × 9.81 ms-²

= 588.6 kgms-²

insert in formula P=F/A

P= 588.6kgms-² / (55×76×10-⁴)

= 1408.13 Pascal (Pa)

massxgravity x heght=weightxheight= pe

4900=490xh

h=10

a.   mass number from atomic number