Question

Which of the following will exert the greatest pressure when standing on the ground?
ballerina: Weight 450 N, on one point, area 0.0015 m2
atmospheric pressure: 105 Pa
man: weight 800 N, area of one foot 0.025 m2
an elephant: weight 50,000 N, area of one foot 0.2 m2

Answer 1

Explanation:

P= F/A

= 450/(15/10000)

= 300000 pa

P=F/A

= 800/(25/1000)

= 32000 pa

P=F/A

= 50000/(2/10)

=250000 pa

ballerina will exerts more pressure on the ground.