A 13 cm long, 9 mm diameter string was found to stretch 4.9 mm under a force of 11 N. The string breaks at a force of 40 N.
1. What is the ultimate strength of the string?
2. What is the modulus of elasticity of the string?
3. What is the strain in the string under an 11 N load?
4. What is the stress in the string under an 11 N load?