Question

13. The pressure on a square plate is measured by
measuring the force on the plate and the length of

the sides of the plate by using the formula p = f/l2
2
If the maximum errors in the measurement of force
and length are 4% and 2% respectively, then the
maximum error in the measurement of pressure is
(1) 1%
(2) 2%
(3) 8%
(4) 10%​

Answer 1

SOLUTION

Pressure = force/area

Pressure = force/areaerror in p= error in f+2× area in l

=) 4+ 4 = 8%

OPTION (3)✓

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