2.  (39) Two masses are connected by a cable  that is wrapped around a pulley of  moment of inertia I  and  radius R = 1.0 m.  The acceleration of the blocks has magnitude a = 0.020 m/s². No friction.

(a)  (5) What is  T₂ ?

(b ) (5) What is  T₁ ?
(c ) (11) What is I?
(d)  (5) If the pulley is in the shape of a solid disk, then what is the mass M of the pulley?
(e)  (3) Assume the system starts from rest. What is the speed v of the blocks after 5.0 seconds?

(f)   (6)  What is the magnitude L  of the angular momentum of the pulley after 5.0 seconds?

(g) (4)  What is the direction, in or out of the page,  of the angular momentum of the pulley after 5.0 seconds of motion? Assume the axis of rotation is perpendicular to the page.

 

3. (30) A beam is attached to a wall,  and at the other end is held in place by a cable of tension T. Check out the diagram. The beam has mass 50.0 kg.  As you can see,  the beam makes an angle of 60 degrees with the horizontal.
   
   

(a)   (16)What is the tension T ?

(b)   (6) What is the horizontal  component of force F_h exerted on the beam by the wall ?

(c)    (8) What is the vertical  component of force F_v exerted on the beam by the wall ?