Question

A man of mass 60 kg stands on a weighing machine
of area 225 m². The pressure exerted by him is
(take g = 10 ms-2)
(1) 26666.7 Nm (2) 266.67 Nm-2
(3) 26.667 Nm-
(4) 2.67 Nm
​

Answer 1

Answer:

4 may be is a correct because i put F=m×a , than divide by area

Answer 2

Answer:

$\bold\red{(4)2.67\:N{m}^{-2}}$

Explanation:

Given,

Mass of the man, $m = 60 Kg$

Acceleration due to gravity,$g = 10 m{s}^{-2}$

Therefore,

Force exerted by man due to gravity on the machine is,

$F = mg\\\\=> F = 60 × 10 \:N\\\\=> F = 600\:N$

Now,

Area , $A = 225{m}^{2}$

But,

we know that,

$Pressure , P= \frac{Force(F)}{Area(A)}$

$= > P = \frac{600}{225} \: N {m}^{ - 2} \\ \\ = > P = 2.67 \: N{m}^{ - 2}$

Hence,

Correct Option is (4)