The dimensional formula of pressure is M1 L-1 T-2.
Derivation of the formula:
Pressure is equal to the force per unit area.
P = F/A
Force is equal to acceleration in Mass
Acceleration is equal to Velocity per unit of Time.
i.e., = [L T-1] [T-1]
= [L T-2].
So the dimensions for force is [M] [L T-2]
F = M¹L¹ T-2.
Where M = Mass, L = Length, and T = Time.
The dimensional formula for area is M0 L2 T0.
By substituting the dimensions of force and area in Pressure formula we get:
P = [M¹ L¹ T-2] x [M0 L2 T0]-1
P = [M¹ L¹ T-2] x [L² ]-1
P = M¹ L-1 T-2.
Hence, the dimensions of pressure is M¹ L-1 T-2.