A boy weighting 60 kg stands on a platform of dimensions 2.5 cm × 0.5 cm.What pressure does he exert on the platform?
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Solution:
Force = Weight = 60kgf
= 60×10 = 600N
Area = 2.5/100 m × 0.5/100 m=25/1000 x 5/1000=1/800m²
Pressure force area
p=600n ÷ 1/8000m²
p=600x8000/1
p=4800000 pa =4.8 x10⁶ pa
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