Question

Imagine a girl of mass 50 kg standing on pencil heels, each of area of cross-section of 1cm2. Try finding pressure exerted by her.

Answer 1

Mass = 50 kg

g = 10 m/s²

Force = mg = 50 × 10

= 500 N

Area = 1cm×2cm

= 0.01×0.02 m²

= 0.0002 m²

Pressure = Force/Area

= 500/0.0002

= 2500000 N/m²

= 2500000 Pa

Hope it helps

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