The stress on the object is a function of which one of the following? (a) The ob

Question

The stress on the object is a function of which one of the following? (a) The object's material and the loads on the object. (b) The loads on the object and dimensions of the object. (c) The object's material and dimensions of the object. (d) None of the above. The deflection of a beam is a function of which one of the following? (a) The beam's material. (b) The loads on the beam. (c) The dimensions of the beam. (d) All of the above. Which one of the following operations is false when determining the forces and moments using a free-body diagram of a beam or beam section? (a) Sum forces equal zero; (b) Sum reaction forces equal sum of the imposed forces; (c) Sum moments equal zero; (d) Moments are determined independent of shear forces. Two beams have the same dimensions but different materials. Both beams are subjected to the same loads. Which one the following statement is TRUE? (a) Both beams have the same stress and the same deflection. (b) Both beams have

Explanation / Answer

1-a;

2-d;

3-d;

4-d ( stresses on both the beams have same stress initially but different defection of beams due to variation in modulus of elasticity causes variation in shape which finally results in different stresses in both beams

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