a girl weighing 50kg is standing on pencil heels, each having an area of cross-section of 5cm.square. calculate the pressure exerted by her on the floor.
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mass of girl = 50 kg
weight of girl = m × g
= 50 × 9.8
= 490 N
area of each cross section
= 5 cm²
5/10000 m²
= 1/2000 m²
area of both cross section
= 2× 1/2000m²
= 1/1000 m²
pressure exerted by girl
= 490÷ 1/1000
= 490× 1000
490000 pa
weight of girl = m × g
= 50 × 9.8
= 490 N
area of each cross section
= 5 cm²
5/10000 m²
= 1/2000 m²
area of both cross section
= 2× 1/2000m²
= 1/1000 m²
pressure exerted by girl
= 490÷ 1/1000
= 490× 1000
490000 pa
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