A 3.50 kg counterweight is attached to a light cord, which is wound around a spool . The spool is a uniform solid cylinder of radius 8.00 cm and mass 1.40 kg.

(a) What is the net torque on the system about the point O?

(b) When the counterweight has a speed v, the pulley has an angular speed w= v/R. Determine the total angular momentum of the system about O.

(c) Using the fact that torque = dL/dt and your result from (b), calculate the acceleration of the counterweight.

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...Rotational motions diagrams are provided for slender rods ... Solution: By Newton's second law, as applied to the rotational motion, applied torque is equal ...

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... Since we consider the rotation as being about the center ... in a direction to provide the torque necessary to ... can be in the direction of motion (rolling downhill ...

... distance from the point of application to the point of rotation. ... αt + ω0 v = at + v0 Equations of motion with constant ... τ = Iα Force/Torque F=Ma. ...

... Thus, the hip adduction torque probably acts to control ... of the series of planar motions (the hip ... hand, may allow the hip external rotation motion to increase ...