Question

A force 'f' is applied on a square plate of side 'l'. If percentage error in determination of 'l' is 3% and 'f' is 4%, then the permissible error in pressure is

Answer 1

Answer:

P=f/area

delta is equivalent to let d

dp/p=df/f+da/a

=0.03+0.04

=0.07

Therefore percentage error in pressure

=7%