engineering recuitment BHEL Engineer Trainee Mock Test 2025 Mechanical Vibrations Undamped Free Vibration Simple Mass System
A mass of 2 kg is hung from the ceiling by a helical spring. When hung, the spring suffers an extension of 100 mm. If the mass is slightly displaced downward and released, it will oscillate at a frequency of (acceleration due gravity at the location is 10 m/s2)
1
1.6 Hz
2
\(\sqrt{50}\) Hz
3
10 Hz
4
50 Hz