The supporting force of the ground to hands: f = g× oaob = 500 n× 2.1cm3.0cm = 350 n;
Contact area between hand and ground:
S total =2S hand =2× 1.5× 10-2? m2=3.0× 10-2？ The second part of money supply
Hands on the ground:
p=FS=350N3.0× 10？ 2m2= 1 1666.7Pa。
Answer: The hand pressure on the ground is 1 1666.7 Pa.
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