Question

1. What would be the basic description for angular frequency?

A) The speed of rotation

B) The time per cycle

C) Angle between velocity and displacement vector

D) The number of cycles per unit time

E) The time needed for motion

2. 1f the mass is 1000kg dashpot coefficient is 100ONm/sec, and the stiffness 20000 N/m for a SDOF system What would Be The Damped undamped natural frequencies of the system?

A) f= 0.91 Hz and fd=1.0 Hz

B) f=0.71 Hz and fd=0.70 Hz

C) f=1.0Hz and fd=0.95 Hz

D) f=0.80 Hz and fd=0.75 Hz

3. If the static load is 1 kN, and the stiffness is 10 kN/m, and mass of the system is 2 tons. What would be displacement of the system under static load?

A) 0.1 m

B) 0.5 m.

C) 2 m

D) 0.2 m

Answer 1