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ok, finally I figure out how to calculate the minimun which is r = (2^(1/6) B^(1/6))/A^(1/6). Am I right?

Thanks

Homework Statement Find distance of equilibrium for: 1. Uvdw(r)=-A/r6+B/r12 A=10-77 Jm6 B=10-134 Jm12 Homework Equations Uvdw(r)=-A/r6+B/r12 The Attempt at a Solution It is suppose that r is the distance, I suppose that r=(2A/B)(1/6) and 0=2A-Br6. However I`m totally lost appreciate your help

LJ-Potential Homework Statement Find distance of equilibrium for: 1. Uvdw(r)=-A/r6+B/r12 A=10-77 Jm6 B=10-134 Jm12 Homework Equations Uvdw(r)=-A/r6+B/r12 The Attempt at a Solution It is suppose that r is the distance, but I have not any idea how to calculate this...

I appreciate your help with this problem from a Three point Bending Test in Wood samples Homework Statement Force: 2400 N Deflection: 4.3 mm Span: 343 mm Length: 392 mm b: 24.01 mm d: 24.25 MOE: 16445.15 MPa How can I calculate the Modulus of Elasticity with shear corrected...

How can I calculated the wood strain in compression to plot it with stress, if the data that I have is the length and several extension data. The extension data corresponds since the 0 load to the the failure. Thanks. Since the equation for Strain is: ΔLength/Initial Length In order to...