|l|l|l 048121620cm A dumbbell is a heavy object used for strength training. Many dumbbells consist of a rod and two (or more) heavy disks that can be attached to the rod. Assume that we attach two heavy disks as shown above. Where is the center of mass of the dumbbell? (The uniform rod extends from -2 cm to 20 cm.) I r 1 1 r X (m) Three spheres with different masses are located on the x-axis as shown above. Where on the x-axis is the center of mass of the three spheres? Give your answer in meters to two significant figures (without units). Y (cm) 6 5. 4+ 3+ 2+ 1+ .|I|.|1X(cm) 123456 Consider the system of particles shown in the figure. What are the (X, y) coordinates for the center of mass of this system of particles? Assume that the lower left particle is at the origin (0, O) and that all particles have equal mass. XCM = Give you answer in cm to two significant figures (without units). YCM = Give you answer in cm to two significant figures (without units)