Two gears with fixed pins at their (geometric, mass) centers (C₁, C₂) are in mesh as shown. The gear radii are r₁ = 8 m and r₂ = 6 m and the moments of inertia about the centers are I = 3 kg m² and 12 = 7 kg - m², respectively. A pure moment M = 8 N - m counterclockwise is applied to the gear centered at C₁. -(2) α₁ = TI || C₁ What is the angular acceleration ₁ of the gear centered at C₁? (Consider a right-handed coordinate system with the +z axis defined as out of the plane shown.) k rad/s² T2 C₂

Two 20-mm steel plates are welded to a rolled S section as shown if a = 88 mm. Determine the moments of inertia and the radii of gyration of the combined section with respect to the centroidal x-axis and y-axis. C a 20 mm - $310 x 47.3 x The moment of inertia with respect to the x-axis is The radius of gyration with respect to the x-axis is The moment of inertia with respect to the y-axis is The radius of gyration with respect to the y-axis is x 106 mm4. mm. X 106 mm4. mm.

These are corrects 100%, but please tell me how to solve that.

Determine lx and ly for the indicated region. Observe that exists symmetry by the x axis