Solution of task 17.2.6 from the collection of Kepe OE

Solution of task 17.2.6 from the collection of Kepe OE

17.2.6
The gear unit, whose mass is 0.3 kg and the radius of inertia ρ = 0.1 m, rotates about the axis Oz but the law φ = 25t2. Determine the principal moment of the inertia forces of the block relative to the Oz axis. (Answer -0.15)