24) What is the youngs modulus if a wire of 2m long, 0.8 mm2 in cross section increases its length by 1.6 mm on suspension of 8 kg weight from it?
Answer is:
12500 kg/mm2
Related Elasticity MCQ with Answers
Answer is:
7
Explanation:
The ratio of ultimate stress to the working stress is known as factor of safety. Its value is more than one.
Factor of Safety = Ultimate Stress/Working Stress
Working Stress = Ultimate Stress/Factor of Safety
Working Stress = 35/5 = 7 kg/mm2