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5/14 MCQs for:
Elasticity

A mass of 50 kg is suspended from a steel wire of diameter 1.0 mm and length 11.2 m.

How much will the wire stretch?

The Young's modulus for steel is 20 x 1010 N/m².

A cable is 100-m long and has a cross-sectional area of 1 mm². A 1000-N force is applied to stretch the cable.

The elastic modulus for the cable is 1.0 x 1011 N/m². How far does it stretch?

A wire of diameter 0.20 mm stretches by 0.20% when a 6.28N force is applied.

What is the elastic modulus of the wire?

A copper wire is found to break when subjected to minimum tension of 36 N. If the wire diameter were half as great, we would expect the wire to break when subjected to a minimum tension of:

A mass is hung from identical wires made of aluminum, brass, copper, and steel.

Which wire will stretch the least?