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
25) What is the safe stress if the ultimate stress of a material is 35 kg/mm2 and factor of safety is 5?
Answer is:
7
Explanation: