Question

5) A (5+(A/10)) kg block is suspended from a spring having a stiffness of 300 N/m. If the block is acted upon by a vertical force F = (7 sin 8 t) N, where t is in seconds, a) Determine the equation with initial conditions which describes the motion of the block when it is pulled down 100 mm from the equilibrium position and released from rest at t = 0. Assume that positive displacement is downward. b) Determine the critical value of k that the system get into resonance. A = LAST DIGIT OF YOUR CLASS ID. (20 POINTS) A = 5.2

          5) A (5+(A/10)) kg block is suspended from a spring having a stiffness of 300 N/m. If the block
is acted upon by a vertical force F = (7 sin 8 t) N, where t is in seconds,
a) Determine the equation with initial conditions which describes the motion of the block when
it is pulled down 100 mm from the equilibrium position and released from rest at t = 0.
Assume that positive displacement is downward.
b) Determine the critical value of k that the system get into resonance.
A = LAST DIGIT OF YOUR CLASS ID. (20 POINTS)
A = 5.2

5) A (5+(A/10)) kg block is suspended from a spring having a stiffness of 300 N/m. If the block
is acted upon by a vertical force F = (7 sin 8 t) N, where t is in seconds,
a) Determine the equation with initial conditions which describes the motion of the block when
it is pulled down 100 mm from the equilibrium position and released from rest at t = 0.
Assume that positive displacement is downward.
b) Determine the critical value of k that the system get into resonance.
A = LAST DIGIT OF YOUR CLASS ID. (20 POINTS)
A = 5.2

Added by Derek L.

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