Answer:
4.96 × 10⁵ Pa
Explanation:
F = mg
[tex]F = (m_{person}+m_{stool})g\\\\F = (4.5 + 89)*9.8\\\\F = 916.3 N[/tex]
This force is evenly distributed on the three leg
radius, r = d/2
= 2.8 / 2
= 1.4 cm = 0.014 m
total cross sectional area of the three legs, A = 3*pi*r^2
[tex]= 3\times\pi \times0.014^2\\\\= 1.847\times10^-^3m^2[/tex]
Pressure due to weight,
P = Weight/A
[tex]P = / 1.847 × 10⁻³\\P = \frac{ 916.3N}{1.847\times10^-^3} \\\\P= 496032.9Pa[/tex]
P = 4.96 × 10⁵ Pa
