Question

sics 4A - Mechanics and Wave Motisn 2017 Final uctor: Dr. Mihai R.Gherase Exam, December 11, 2017 A mass m-2.0 kg is attached to a spring having an elastic constant 300 Nim as hows in the fg between the block and table are frictioaless. The mass is displaced from is eqailiim p frequency of oscillation (in Hz) will be approximately The ices and veleased 12 0.50 0.01 b. 0.08 uniform steel beam of length !=6.0 m and mass m,-120kg is attached via·hinge tothe side of bul ebeam is supported by a steel cable attached to the end of the beam at an angle θ-30", asshown-tef rough the hinge, the wall exerts an unknown force, F, on the beam. A workman of mass m-75 kg sits nch a distance d = 1.8 m from the building. Determine the tension exerted by the cable on the bar. (1e 4 5 6 0

Answer 1