a girl of mass 50 kg standing on pencil heels ,each of area of cross section of 1cmsq. find the force excreted by the girl (take g=10m/s2)
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Hyy Dude
Mass of girl = 50 kg = 50*10 = 500 N
Area of the heels 2*1 cm2 = 2cm2
Preassure exerted by the girl= 500N/2cm2
500*100*100/2
2500000 pa
Mass of the elephant 5000kg = 5000*10N
Area of feet=4*250cm2
= 4*250/100*100
Preassure exerted by elephant= 5000*10*100*100/4*250
=500000
The girl will exert more preassure than elephant by =(2500000-500000) = 2000000
May this helps you
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