If force F, velocity v and time T are taken as fundamental units. The dimension of force in the dimensional formula of pressure is________________

[F]=MLT−2⇒[v]=LT−1∴     [L]=[vT]∴     [M]=[F]LT−2=[F][vT]×T−2=Fv−1T∴     Pressure =ML−1T−2=Fv−1TvT−1T−2=Fv−2T−2Thus, in the dimensional formula of pressure, the dimension of force is 1.