Solve: Mechanic of Material Find Zero Deflection Tension

2.16      Both portion of the rod ABC are made of an aluminium for which E = 70 Gpa. Knowing that the magnitude of P is 4 kN, determine (a) the value of Q so that the deflection at A is zero, (b) the corresoonding deflection of B.

Guru Solution (a)

Force in member AB is P tension

Elongation

Force in member BC is Q-P compression

Shortening

For zero deflection at A

Guru Solution (b)

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