a) You have two uniform solid spheres. The ratio o…


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20.50

a) You have two uniform solid spheres. The ratio of the moments of intertia is I2/I1 = 3.18. The ratio of the radii is R2/R1 = 0.573 Find the ratio of the masses M2/M1. b) An oddly shaped object rotates about an axis through its center of mass, and has moment of inertia Io. When it rotates about axis parallel to the original axis at distance d = 1.57 m from the center of mass, the moment of inertia increases by ΔI = 5.03 kg-m2. Find M, the mass of the object. kg c) Three point masses lie along a rigid, massless rod of length L = 3.93 m : – Two particles, both of mass m = 7.2 kg, lie on opposite ends of the rod. – Mass M = 6.51 kg is in the center of the rod. Assume the rod is in the x-y plane and rotates about the y-axis at constant angular speed ω = 2.57 rad/s.. The axis passes through the rod at distance d = 1.09 m from one end. Find K, the kinetic energy of this system: J

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20.50