Question 2: Keys with a combined mass of 0.100 kg are attached to a 0.25 m long string and swung in a circle in the vertical plane. a. Determine the slowest speed that the keys can swing and still maintain a circular path. b. Determine the magnitude of the tension in the string at the bottom of the circle. Question 3: Two objects are connected by a string passing over a frictionless pulley. When the objects are in motion objectA experiences a force of kinetic friction with a magnitude equal to 5.0 N. The mass of objectA is 2.1 kg and the mass of object B is 3.3 kg. > A- 3. Determine the magnitude of acceleration for the system. b. Determine the magnitude of the tension in the string