Friday

January 30, 2015

January 30, 2015

Posted by **farid** on Friday, December 27, 2013 at 2:08pm.

a.What is the tensile strain

b.Why has the answer no units?

c.The greatest tensile stress which steel of a particular sort of a particular sort can withstand without breaking is about 10>9 N m>-2.A wire of cross-sectional area 0.01 mm>2 is made of this steel. What is the greatest force that it can withstand?

d.Find the minimum diameter of an alloy cable, tensile strength 75 MPa, needed to support a load of 15 kN.

e.Calculate the tensile stress in a suspension bridge supporting cable, of diameter of 50 mm, which pulls up on the roadway with a force of 4 kN.

F.Calculate the tensile stress in a nylon fishing line of diameter 0.36 mm which a fish is pulling with a force of 20 N.

g.A large crane has a steel lifting cable of diameter 36 mm. The steel used has a Young modulus of 200 GPa.When the crane is used to lift 20 kN, the unstretched cable length is 25.0 m. Calculate the extension of the cable

- physics -
**Damon**, Friday, December 27, 2013 at 2:25pmActually I think it is your turn. I already know how to do these and have set up several for you. They are all Pretty much the same.

- physics -
**farid**, Saturday, December 28, 2013 at 12:50amcan u help me damon?

i confuse about this topic

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