A square section beam of fixed length l is designed to deflect a fixed amount δ when loaded in cantilever bending under a fixed force F. Using the formula given below for the mass M of the beam in terms of its density ρ and elastic modulus E, determine which of the following materials would give the lightest beam. Wood: E=12 GPa, ρ=600 kg/m³; Carbon fibre reinforced plastic (CFRP): E=120 GPa, ρ =1600kg/m³, Aluminium: E=75 GPa, ρ=2700 kg/m³; Steel: E =196 GPa, ρ=7800 kg/m³

The following curve is typical of:

Please note - this question is randomly generated. If you return to this quiz after submission, the graph you are given may change.

When will you start to see necking in your tensile sample?

A square section beam of fixed length l is designed to deflect a fixed amount δ when loaded in cantilever bending under a fixed force F. Using the formula given below for the mass M of the beam in terms of its density ρ and elastic modulus E, determine which of the following materials would give the lightest beam. Wood: E=12 GPa, ρ=600 kg/m³; Carbon fibre reinforced plastic (CFRP): E=120 GPa, ρ =1600kg/m³, Aluminium: E=75 GPa, ρ=2700 kg/m³; Steel: E =196 GPa, ρ=7800 kg/m³

The following curve is typical of:

Please note - this question is randomly generated. If you return to this quiz after submission, the graph you are given may change.

If you arrive late for a lab class, will you be admitted?

How do you see your current chemistry lab mark?