Asked by joan
A copper wire with cross sectional area 0.00030cm^2 is to be used in lifting a 100g object.How fast can the object be accelerated if the wire is to stretch not more than 0.10%?
What i know is that first find the elongation & then that will help to find acceleration..
What i know is that first find the elongation & then that will help to find acceleration..
Answers
Answered by
bobpursley
Young Modulus (E) = [F/A]/[e/Lo] = FLo/eA
so e/L=.001 here is the limit, and
Young Modulus=120GPa
F=.1*9.8N+.1a
A=(in m^2)=3E-4 cm^2*1E-4m^2/cm^2
solve for acceleration a.
so e/L=.001 here is the limit, and
Young Modulus=120GPa
F=.1*9.8N+.1a
A=(in m^2)=3E-4 cm^2*1E-4m^2/cm^2
solve for acceleration a.
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