The answers should be in the following ranges:
a) P = 1331.5 lbf
b) 1000 lbf < Pallow < 1500 lbf
1. Just because you were bored and found these metal parts, you've built this assembly and decided to run some tests on it. Thanks to the serial numbers on them, you've determined that the parts you found are a brass cylinder with modulus of elasticity E = 15 x 10^6 psi and diameter d1 = 0.25 in. and a steel pipe Es = 30 x 10^6 psi with inner diameter d = 0.28 in. and outer diameter d3 = 0.35 in. You've cut them both down to a length of 4.0 in.
Steel shell Brass core
a) If load P shortens the length of the assembly by 0.003 in, what is the magnitude of P? Round to 2 decimals.
kips
b) The steel and brass have allowable stresses 22 ksi and 16 ksi respectively. What is the maximum permissible load Pmax? (Hint: use equations from example 2-8) Round to 2 decimals.
kips