Centimeters 61934

How much pressure on the rails will cause an empty truck weighing 20 tons if the contact area of ​​all wheels and rails is 16 square centimeters?

Correct answer:

p =  125 MPa

Step-by-step explanation:

m=20 t kg=20 1000  kg=20000 kg S=16 cm2 m2=16:10000  m2=0.0016 m2 g=10 m/s2  F=m g=20000 10=200000 N p0=SF=0.0016200000=125000000 Pa  p=p0/106=125000000/106=125 MPa

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