A 5-kg block is suspended from a spring having a stiffness of 300 N/m as shown in (Figure 1). Part A If the block is acted upon by a vertical force F = (7 sin8t) N, where t is in seconds, select the equation 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. Displacement y is measured in mm. Assume that positive displacement is downward. Express your answer in terms of the variable t. Express the coefficients to three siginificant figures so the displacement is measured in millimeters. ▸ View Available Hint(s) Submit A vec G → ? mm

A 5-kg block is suspended from a spring having a stiffness of 300 N/m as shown in (Figure 1). Part A If the block is acted upon by a vertical force F = (7 sin8t) N, where t is in seconds, select the equation 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. Displacement y is measured in mm. Assume that positive displacement is downward. Express your answer in terms of the variable t. Express the coefficients to three siginificant figures so the displacement is measured in millimeters. ▸ View Available Hint(s) Submit A vec G → ? mm