Two stacked boxes are sliding along an ice rink with an initial velocity vo to the right. You are trying to stop the boxes so you exert a force Fy1 on the top box as indicated in the figure. F V. 1 2 The magnitude of the force that you exert is variable, and follows the equation: Fy1 Fo e - bt with Fo and b constants, and t the time since you began exerting the force. Because the boxes are sliding on ice, the friction between box 2 and the ground is negligible. There is friction between the two boxes, and they are observed to accelerate together as you exert the force to slow them down. Note: This problem will be much easier if you solve everything symbolically before you substitute numerical values for the parameters. Use the following values for the parameters: mị = 9 kg то — 4 kg $ = 30.7° Fo = 99 N b= 0.18 s¬1 tį = 3.1 s Yn = 9,8 m/s

Two stacked boxes are sliding along an ice rink with an initial velocity vo to the right. You are trying to stop the boxes so you exert a force Fy1 on the top box as indicated in the figure. F V. 1 2 The magnitude of the force that you exert is variable, and follows the equation: Fy1 Fo e - bt with Fo and b constants, and t the time since you began exerting the force. Because the boxes are sliding on ice, the friction between box 2 and the ground is negligible. There is friction between the two boxes, and they are observed to accelerate together as you exert the force to slow them down. Note: This problem will be much easier if you solve everything symbolically before you substitute numerical values for the parameters. Use the following values for the parameters: mị = 9 kg то — 4 kg $ = 30.7° Fo = 99 N b= 0.18 s¬1 tį = 3.1 s Yn = 9,8 m/s