has the mass 0,5 kg and the radius 0,8 m, the moment of inertia is 0,16 kgm². If the amount of force is 2 N, and the lever arm 0,6 m, the amount of torque is 1,2 Nm. At the instant shown, the force gives to the disc the angular acceleration ? = /I = 7,5 rad/s², and to its center of mass it gives the linear acceleration a = F/m = 4 m/s².

Resultant force

Resultant force and torque replaces the effects of a system of forces acting on

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