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# (20 points) Dynamics of linear and rotational motions The cord in the gure pulls the block with mass m=4 kg along inclined plane (6 =30"). Friction...

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3. (20 points) Dynamics of linear and rotational motions The cord in the ﬁgure pulls the block with mass m=4 kg along inclined plane (6 =30”). Friction coeﬂlcient between
the plane and the block is “=03. The block moves up with constant acceleration (i=4 m/sz. In the setup the cord
passes over the pulley without slip. Moment of inertia of the pulley is 1:3 kg&quot;‘m2 and the radius R=0.3 In. There is
also friction between the pulley’s body and the pulley’s axle. The friction creates an additional, constant torque
Tf=7 N*m applied to the pulley and directed opposite to the direction of the pulley rotation. What is the magnitude of the force F applied to the other end of the cord? '17
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